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Fishelly Takes Care of Your Aquariums Fish

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List of aquarium fish species

List of aquarium fish species

Discover the different types of aquarium fish in our comprehensive guide. Whether you're interested in freshwater fish species or saltwater fish types, we provide detailed information to help you choose the perfect fish for your tank. Explore our section on exotic fish for aquariums to find unique and beautiful species.

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How to Care for Freshwater Fish

How to Care for Freshwater Fish

For beginner aquarists, maintaining a healthy and thriving aquarium can be a challenging task. An aquarium, whether saltwater or freshwater, requires each owner’s full attention and efforts to be healthy.

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Amazing Facts about fish

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Most searched aquarium fish

Betta Fish (Male)

Betta Fish (Male)

1911

The Betta Fish (Male) is a popular aquarium fish known for its vibrant colors and Moderate of care. It belongs to the family Osphronemidae and is native to the Southeast Asia region in Central America.

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Guppy

Guppy

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The Guppy is a popular aquarium fish known for its vibrant colors and Easy of care. It belongs to the family Poeciliidae and is native to the South America region in Central America.

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Angelfish

Angelfish

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The Angelfish is a popular aquarium fish known for its vibrant colors and Moderate to high care of care. It belongs to the family Cichlidae and is native to the Amazon River region in Central America.

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Clownfish

Clownfish

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The Clownfish is a popular aquarium fish known for its vibrant colors and Beginner-friendly of care. It belongs to the family Pomacentridae and is native to the Pacific and Indian Oceans region in Central America.

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Amazing Facts About Fish

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  • Newborn Fish Care: Complete Baby Fish Guide
    AQUARIUM CARE & MAINTENANCE• Fetching Data...

    Newborn Fish Care: Complete Baby Fish Guide

    Discover how to care for baby fish with our easy guide. Covers feeding, tank setup, water quality, and safety tips for successful newborn fry care.

    Table of Contents

    1. What Are Newborn Fish Called?
    2. Setting Up a Safe Space
    3. Water Quality Tips
    4. Feeding Your Baby Fish
    5. Lighting & Environment
    6. Protection from Danger
    7. Growth Timeline
    8. Do’s and Don’ts of Fry Care
    9. Avoid These Mistakes
    10. Types of Baby Fish
    11. Moving Fry to Main Tank
    12. If Problems Happen
    13. Final Tips
    14. Faq
    15. Conclusion

    Finding baby fish in your aquarium is exciting but can feel overwhelming. These tiny creatures, called fry, are very delicate and need special care to survive. Baby fish require different food, water conditions, and protection compared to adult fish. With the right knowledge and patience, you can successfully raise healthy baby fish from birth to adulthood. This guide will teach you everything you need to know in simple, easy-to-understand steps.

    What Are Newborn Fish Called?

    Newborn fish are commonly known as "fry." This term is used for baby fish that have just hatched from their eggs or have been born live, depending on the fish species.

    At this early stage of life, fry are extremely tiny, fragile, and not fully developed. They are usually transparent or pale in color and often float or hide near the surface or bottom of the tank. Most fry cannot swim strongly yet and do not have fully formed fins.

    Because they are so small, they are highly vulnerable — not just to predators (including other fish in the tank) but also to poor water conditions and lack of proper nutrition. That’s why they need special care, such as gentle filtration, frequent small feedings, and a safe, separate space to grow without threats.

    As they grow and begin to eat on their own, they enter the next stage of life and eventually develop into juveniles and then adult fish.

    Setting Up a Safe Space

    Best Option: Use a separate 10–20 gallon tank

    If not: Use a breeding box/net in the main tank

    • Keep adult fish away — they may eat the fry.

    • Use a gentle sponge filter and keep the water warm (75–80°F or 24–27°C).

    • Add plants like Java moss for hiding spots.

    Water Quality Tips

    • Change 10–20% water every 2–3 days.

    • Use a gentle siphon and water conditioner.

    • Maintain temperature (75–80°F).

    • Test water:

    o pH: 6.5–7.5

    o Ammonia/Nitrites: 0

    Feeding Your Baby Fish

    What to Feed Newborn Fish

    First Week:

    • Infusoria (tiny microorganisms)

    • Liquid fry food from pet stores

    • Egg yolk (very small amount, mixed with water)

    • Green water (water with beneficial algae)

    After First Week:

    • Baby brine shrimp (live or frozen)

    • Crushed flake food (make powder-fine)

    • Micro worms

    • Daphnia (water fleas)

    How Much and How Often

    • Feed small amounts 3-5 times per day

    • Only give what they can eat in 2-3 minutes

    • Remove leftover food to prevent water pollution

    • Remember: Tiny stomachs = frequent meals

    Making Your Own Baby Fish Food

    • Hard-boiled egg yolk mixed with water

    • Crush adult fish flakes into fine powder

    • Blend vegetables like peas (remove skin first)

    • Always strain food to make it very small

    Lighting & Environment

    • Use soft lights for 8–12 hours a day

    • Avoid sudden light changes

    • Provide hiding spots using plants and decorations

    Protection from Danger

    • Separate from adults until fry are 1 inch long

    • Use sponge filters to prevent sucking them in

    • Watch for diseases (white spots, odd behavior)

    Growth Timeline

    • Week 1–2: Very tiny, hiding, slow growth

    • Week 3–4: Active swimming, visible colors

    • Week 5–8: Can eat regular food, ready for main tank

    Do’s and Don’ts of Fry Care

    Do’s

    • Use a separate tank or breeding box

    • Feed small meals 3–5 times daily

    • Maintain water temp 75–80°F

    • Perform regular water changes

    • Use sponge filters and live plants for safety and comfort

    • Observe fry daily for changes

    • Vary food types for balanced nutrition

    • Test and monitor water quality

    Don’ts

    • Don’t overfeed — leftover food = dirty water

    • Don’t use strong filters — fry are too weak

    • Don’t mix fry with adult fish too early

    • Don’t skip water changes

    • Don’t use bright or flashing lights

    • Don’t expose fry to fluctuating temperatures

    • Don’t medicate without expert advice

    • Don’t overcrowd the fry tank

    • Don’t stress over a few losses — it’s normal

    • Don’t rely on just one food type

    Avoid These Mistakes

    • Overfeeding = dirty water

    • Skipping water changes

    • Introducing fry to adults too soon

    • Sudden temperature or light changes

    Types of Baby Fish

    • Egg-layers (like tetras): Smaller, slower growth

    • Livebearers (like guppies): Bigger at birth, grow faster

    Moving Fry to Main Tank

    • Wait until they are at least 1 inch

    • Test with a few fish first

    • Move them gradually and monitor behavior

    If Problems Happen

    • Won’t eat? Try smaller or different food

    • Dying? Check water and feeding

    • Slow growth? Improve diet and water quality

    Final Tips

    • Be patient — fry take time to grow

    • Keep notes on feeding and water changes

    • Start with a small batch

    • Join online fishkeeping groups for help

    FAQ

    1. What are baby fish called?

    They are called fry. This term is used for baby fish that just hatched or were born.

    2. Can I keep fry with adult fish?

    No, adult fish might eat the fry. It's best to keep them separate.

    3. What’s the easiest way to keep fry safe?

    Use a separate tank or a breeding box/net inside the main tank.

    4. How warm should the water be for baby fish?

    Keep it between 75–80°F (24–27°C).

    5. How do I feed newborn fish?

    Start with infusoria, liquid fry food, or a bit of egg yolk. Feed very small amounts 3–5 times a day.

    6. When can fry eat regular fish food?

    After 2–3 weeks, you can start giving them crushed flakes and baby brine shrimp.

    7. How often should I change the water?

    Change 10–20% of the water every 2–3 days using a gentle siphon.

    8. What should the water quality be?

    pH: 6.5–7.5; Ammonia & Nitrites: 0.

    9. Can I make fry food at home?

    Yes, you can mash egg yolk, blend peas, or crush flakes into powder.

    10. How do I know if the fry are growing properly?

    You’ll see them swimming more actively and showing color by week 3–4.

    11. When can I move fry to the main tank?

    Once they’re at least 1 inch long and strong enough to swim with others.

    12. Why are my baby fish dying?

    Check water quality, avoid overfeeding, and make sure they're getting enough nutrition.

    13. What are the most common mistakes?

    Overfeeding, dirty water, mixing fry with adults too early, and sudden changes in light or temperature.

    14. Do all baby fish grow at the same speed?

    No, livebearers like guppies grow faster than egg-layers like tetras.

    15. Is raising fry difficult for beginners?

    It takes some effort, but with patience and care, even beginners can do it successfully.

    Conclusion

    Caring for baby fish takes effort, but it’s worth it. Focus on clean water, frequent feeding, and protection from adults. Even if you lose a few at first, you’ll learn and improve with time. Watching fry grow is one of the most rewarding parts of fishkeeping!

    Read more

    7Read More
  • Is Your Fish Sick? Don’t Wait – Quarantine It
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    Is Your Fish Sick? Don’t Wait – Quarantine It

    Learn how to quarantine a sick fish the right way. Easy setup, medicine tips, and daily care to help your fish recover fast and protect your tank.

    Table of Contents

    1. Why Quarantine Is Important
    2. How to Set Up a Quarantine Tank
    3. How to Give Medicine Safely
    4. Oxygen and Clean Water Are Very Important
    5. Stay Calm: Your Energy Affects Your Fish
    6. Faq
    7. Conclusion

    When you notice that your fish isn’t swimming normally, has white spots, clamped fins, or just seems unwell, it’s important to take action right away. One of the best things you can do is move the sick fish into a separate tank—this is called a quarantine tank. A quarantine tank gives your fish a clean, calm space to rest and recover without stress from other fish. It also protects your healthy fish from catching the same illness. In this blog, we’ll guide you step-by-step on how to set up a quarantine tank, give medicine the right way, and care for your fish during recovery—all in a simple and beginner-friendly way.

    Why Quarantine Is Important

    Quarantining a sick fish is very important. It helps in two major ways:

    First, it prevents the disease from spreading to your other healthy fish in the main tank. Fish illnesses can spread quickly in shared water, so moving the sick one out protects the rest of your aquarium.

    Second, it gives your fish a peaceful place to heal. In the main tank, other fish may bother the sick one, and water conditions may not be ideal for treatment. In a small, quiet tank, your fish can relax, and you can treat it properly without worrying about harming anything else. Important Note: Never use medicine directly in your main tank! It can harm your plants, helpful bacteria, and even healthy fish.

    How to Set Up a Quarantine Tank

    Setting up a quarantine tank is easy. You don’t need anything fancy, just the basics. Here’s how to do it the right way:

    • Use 100% water from your main tank: This helps avoid stress because the fish is already used to this water.

    • Don’t add gravel, plants, or decorations: A bare tank is easier to clean and lets you see waste or leftover food.

    • Add a sponge filter or air stone: This keeps oxygen flowing and the water gently moving.

    • Use a heater to keep the temperature stable: Sick fish don’t handle temperature changes well.

    How to Give Medicine Safely

    Giving medicine can help—but it must be done correctly. Here's how to do it the safe way:

    1. Figure out what kind of illness your fish has (white spots, fungus, swollen belly, etc.).
    1. Buy the right medicine for that illness. Ask your local pet store or check trusted aquarium websites.

    2. Read the label carefully and follow the instructions. Don’t guess the amount!

    3. Mix the medicine well in the quarantine tank water.

    4. Watch your fish after adding medicine. Make sure it's not acting worse or more stressed.

    Be careful: Using too much medicine (overdosing) can harm or even kill the fish. Always measure correctly!

    Oxygen and Clean Water Are Very Important

    When a fish is sick, it needs clean water and lots of oxygen to feel better. Here’s how to make sure your fish gets both:

    • Always use an air pump or sponge filter to keep oxygen levels high.

    • Change 20–30% of the water every day to keep it clean.

    • Remove uneaten food quickly so it doesn’t rot and dirty the water.

    • Watch for stress signs, like:

    o Gasping at the top of the water

    o Hiding all the time

    o Losing color or looking pale

    These signs mean the fish might be uncomfortable and you need to check the water or oxygen levels.

    Stay Calm: Your Energy Affects Your Fish

    It’s natural to feel worried when your fish is sick—but remember, fish can sense stress in their environment. Sudden movements, tapping on the glass, or constant checking can make things worse.

    Here are a few tips to help you and your fish stay calm:

    • Stay relaxed when observing your fish

    • Don’t change or mix treatments too often

    • Be patient—healing takes time

    • Avoid loud noises and sudden movements near the tank

    Remember: Relax and nurture your passion. Excessive excitement or treatments could harm your unwell fish. A calm environment helps your fish heal better.

    Faq

    1: What is a quarantine tank?

    A quarantine tank is a small, separate tank used to keep sick or new fish away from your main aquarium.

    2: Why can’t I treat the sick fish in the main tank?

    Medicine can harm healthy fish, plants, and good bacteria in your main tank.

    3: How long should I keep a fish in quarantine?

    Usually 7 to 14 days, or until the fish is fully recovered.

    4: Can I use tap water in the quarantine tank?

    Only if it’s treated with dechlorinator. It’s best to use water from your main tank.

    5: What if I don’t have a sponge filter?

    Use an air stone with an air pump—it will help provide oxygen.

    6: How do I know if my fish is getting better?

    You’ll see it swimming normally, eating well, and its color will look brighter.

    7: My fish is still not eating. What should I do?

    Check water quality, reduce stress, and continue treatment. Give it time.

    8: Can I quarantine more than one fish together?

    Yes, if they have the same illness and are not aggressive toward each other.

    9: Do I need a big tank for quarantine?

    No, a small tank (10–20 liters) is usually enough for one or two fish.

    10: When should I start quarantine?

    As soon as you notice any signs of illness—don’t wait!

    Conclusion

    Taking care of a sick fish doesn’t have to be scary. With a simple quarantine tank, clean water, and the right medicine, you can help your fish recover faster and keep your other fish safe. Always act early when you see something wrong—it’s the best way to give your fish a chance to heal.

    Read more

    157Read More
  • New Aquarium Setup: Must-Do Steps Before Adding Fish
    AQUARIUM CARE & MAINTENANCE• Fetching Data...

    New Aquarium Setup: Must-Do Steps Before Adding Fish

    Avoid common beginner mistakes with your new aquarium. Learn how to cycle your tank, test water, and create a safe, healthy home for your fish.

    Table of Contents

    1. Why Preparation Matters
    2. What Can Go Wrong Without Preparation
    3. Learning the Nitrogen Cycle (A Must-Do)
    4. Mandatory Steps Before Adding Fish
    5. Biggest Mistakes to Avoid
    6. Bonus: Tips for Long-Term Success
    7. Faq
    8. Conclusion

    Installing a new aquarium is an exhilarating experience, more so when you are about to introduce your first fish. However, before you take a dash to the pet store, you should note that a fish tank requires more than water to be safe. If not properly prepared, your fish may end up exposed to harmful conditions that can affect their well-being or even result in premature death. In this guide, we'll take you through everything you need to do before you bring new fish home — from learning about the nitrogen cycle to common mistakes — so you can create a healthy, thriving aquarium from day one.

    Why Preparation Matters

    Aquariums are not simply decorations — they are whole ecosystems. Putting fish into an uncycled or unprepared tank is like buying a house that is full of poisonous gas. Fish might last a couple of days, but their health will soon deteriorate.

    What Can Go Wrong Without Preparation

    • Ammonia poisoning: colourless but lethal

    • Weakened immune system: resulting in illness and stress

    • Sudden deaths: particularly with sensitive or tiny species

    • Algae blooms: poor balance causes green, cloudy water

    Successful setup guarantees stable water conditions, healthier fish, and a worry-free hobby for you.

    Learning the Nitrogen Cycle (A Must-Do)

    The nitrogen cycle is the biological process that converts fish waste into less toxic substances.

    Here's what happens naturally in a cycled tank:

    Ammonia (NH₃): Comes from fish waste, uneaten food, and decaying plants. Nitrite (NO₂⁻): Beneficial bacteria convert ammonia into nitrite (also toxic). Nitrate (NO₃⁻): Another type of bacteria turns nitrite into nitrate, which is safe in low amounts.

    To Cycle Your Tank:

    • Start your tank at least 1 week before adding fish.

    • Add bottled beneficial bacteria to speed up the cycle.

    • Add a pinch of fish food daily (as a source of ammonia) or pure ammonia for fishless cycling.

    • Test water daily with a liquid test kit (such as API Master Kit).

    • Perform water changes (25–50%) if ammonia or nitrite levels become too high.

    • It will usually take 2–6 weeks for most tanks to complete cycling. Bottled bacteria can accelerate it.

    Mandatory Steps Before Adding Fish

    After the tank is cycled and stable, do these steps before adding your new fish:

    What You MUST Do:

    Dechlorinate (water condition): Tap water has chlorine or chloramine — toxic to fish and beneficial bacteria.

    Beneficial bacteria: Keep using bottled bacteria when adding fish to build up the biofilter.

    Test water quality: Ensure Ammonia = 0, Nitrite = 0, Nitrate < 40 ppm.

    Maintain low lighting initially: New fish can be stressed by bright lights, and they encourage algae growth.

    Maintain stable temperature: Sudden temperature differences between the tank and the fish bag water can shock the fish. Use a heater and thermometer to stabilize water before adding fish.

    Add live plants (optional but beneficial):

    • Absorb nitrates

    • Offer shelter and minimize stress

    • Compete with algae for food

    Acclimate your fish gradually:

    • Float bag for 15-30 minutes to match temperature.

    • Slowly mix tank water into bag over 30–60 minutes.

    • Use a net to move fish (don't add store water to your tank).

    Biggest Mistakes to Avoid

    Learning what not to do is also crucial. These typical newbie mistakes can wreck your tank or kill your fish.

    Don't Make These Mistakes:

    Adding fish on the same day that you set up the tank Your tank isn't biologically safe yet.

    Overfeeding Rotting food increases ammonia levels.

    Not doing water tests Clear water isn’t always clean. Toxic levels are invisible!

    Mixing incompatible species Some fish fight, eat others, or need different water conditions.

    Using only strips for testing Test strips are quick but often inaccurate. Use liquid kits for reliable results.

    Ignoring quarantine tanks New fish can carry diseases. Quarantine new arrivals for 2–4 weeks if possible.

    Not doing water changes Even cycled tanks need regular 20–30% water changes weekly to remove nitrates and toxins

    Purchasing too much fish at one time Add fish gradually, a few at a time. Allow your bacteria to catch up with new levels of waste.

    Bonus: Tips for Long-Term Success

    • Check water weekly (particularly within the first 2 months)

    • Replace 20–30% of the water weekly

    • Gently clean algae off glass and decorations

    • Monitor fish behavior daily – unusual changes can suggest issues

    • Maintain stable temperature – use a heater and thermometer

    Faq

    1. Can I add fish on the same day I set up the tank?

    No, you need to cycle the tank first.

    2. What is the nitrogen cycle?

    It’s the process that turns fish waste into less harmful substances.

    3. How long does cycling take?

    About 2–6 weeks.

    4. Do I need to test water even if it looks clean?

    Yes, toxic levels are invisible.

    5. Can I use tap water?

    Yes, but use a water conditioner first.

    6. How do I know the tank is ready for fish?

    Ammonia = 0, Nitrite = 0, Nitrate < 40 ppm.

    7. Do I need a heater?

    Yes, for tropical fish.

    8. Can I add all fish at once?

    No, add a few at a time.

    9. How do I add new fish?

    Float the bag, slowly mix water, use a net to transfer.

    10. Are live plants necessary?

    Not required, but very helpful.

    Conclusion

    Putting in the effort to properly install and cycle your tank is the ultimate gift to your fish. With a little patience and TLC, you'll steer clear of mistakes and develop a healthy, stress-free environment where your fish can flourish. Go slow, follow the directions, and have a successful fishkeeping experience! Read more

    514Read More
  • Monsoon Aquarium Care: Easy Tips to Keep Fish Healthy
    AQUARIUM CARE & MAINTENANCE• Fetching Data...

    Monsoon Aquarium Care: Easy Tips to Keep Fish Healthy

    Learn how to take care of your aquarium during the rainy season. Simple tips to keep water clean, temperature right, and your fish healthy in monsoon.

    Table of Contents

    1. What Occurs During Rainy Season?
    2. Easy Tips to Take Care of Your Aquarium
    3. Things You Should NOT Do
    4. Extra Tips
    5. Faq
    6. Conclusion

    Rainy season (monsoon) brings rain, fresh air, and cool weather. But for those who have fish in an aquarium, this season demands special care. The weather becomes cool, the air becomes humid (wet), and sometimes the water gets spoiled.If you do not take special care of your aquarium, your fish will become sick or even die. But don't worry! In this blog, you will learn simple and easy steps for taking care of your fish tank during the rainy season.

    What Occurs During Rainy Season?

    Lower Temperature: The air and water become cold, stressing the fish.

    Higher Humidity: There is more water in the air. It can cause fungus or mold in the tank.

    Filthy Tap Water: Rainwater is blended with city water, which could be dirty or contain toxic chemicals.

    Power Cuts: During rainy weather, power may cut off frequently.

    Dust and Pollution: There is more dust and germs in the water and air.

    Easy Tips to Take Care of Your Aquarium

    1. Maintain Water Clean and Safe

    • Use RO or filtered water if possible.

    • Include dechlorinator drops to tap water prior to use in the tank.

    • Replace 20–25% of tank water every week.

    • Check the water weekly with a simple test kit for pH, ammonia, nitrate, and nitrite.

    The optimal pH for most fish is 6.5 to 7.5.

    2. Get the Temperature Just Right

    • Use a thermostatically controlled heater to maintain the water at a warm temperature.

    • Measure the water temperature every day with a thermometer.

    • Sun direct exposure to cold wind and windows.

    • Most tropical fishes like 24°C to 28°C water.

    3. Give enough oxygen

    • Supplement oxygen for your fish with the assistance of an air pump.

    • Make the water surface oscillate using a filter or air stone.

    • If safe, open the lid on the tank for a few minutes daily to provide for fresh air.

    4. Check for Infections or Fungus

    • Clean your tank and glass every week.

    • Throw away expired food or wilted plants.

    Monitor your fish

    White spots: Fungus

    Redness or swelling: Infection

    Body rubbing against objects: Parasite

    Have fish medicine in hand for emergencies.

    5. Feed Correctly Fish eat fewer items at low temperatures.

    • Feed once or twice a day.

    • Offer them something that they can eat within 2–3 minutes.

    • Give dry or quality food. Avoid wet or sticky food.

    6. Prepare for Power Outages

    • Purchase a battery air pump. It will save your fish's life during a power outage.

    • If possible, put a UPS on your filter and heater.

    • Keep fish calm and undisturbed in the event of a power outage. Don't create a disturbance or slam the tank.

    7. Sweep and Inspect the Tank

    • Clean tank glass once a week.

    • Clean lights and lid to prevent rust or fungus.

    • Check if filter, heater, and air pump are in good working condition.

    • Drain excess fish if tank is too full. The more fish, the more waste and the less oxygen.

    Things You Should NOT Do

    • Don't place tank near windows or open areas.

    • Do not use rainwater in your tank.

    • Do not overfeed your fish.

    • Don't skip cleaning, even if the water looks clear.

    Extra Tips

    • Put a towel under the tank to stop water drops from damaging your furniture.

    • Keep your fish tank covered to stop dust or insects from falling inside.

    • Watch your fish daily. If they act different or look sick, check water and temperature.

    Faq

    1. Why are my fish stressed during rain?

    Because of cold water, dirty air, and power cuts.

    2. Can I use rainwater in my tank?

    No, it may have harmful chemicals.

    3. What water should I use?

    Use RO or filtered water. Add dechlorinator to tap water.

    4. How often to change water?

    Change 20–25% every week.

    5. What is the right water temperature?

    24°C to 28°C is best for most tropical fish.

    6. My fish are eating less. Is that normal?

    Yes, fish eat less in cool weather.

    7. How do I test water?

    Use a water test kit for pH, ammonia, nitrate, and nitrite.

    8. What to do in power cuts?

    Use a battery air pump or UPS for filter/heater.

    9. How to stop fungus or infection?

    Clean the tank weekly and remove expired food/plants.

    10. Can I keep the tank near a window?

    No, avoid cold wind and dirty air.

    11. Signs my fish are sick?

    White spots, red patches, or rubbing against things.

    12. Can I skip cleaning if water looks clear?

    No, clean weekly to avoid hidden problems.

    13. How to protect furniture from tank water?

    Put a towel or mat under the tank.

    14. Should I cover the tank?

    Yes, to stop dust and insects.

    15. How to keep fish healthy in rain?

    Clean water, right temperature, and daily checks.

    Conclusion

    Rainy season is beautiful, but your fish need extra care during this time. If you keep the water clean, the temperature right, and watch your fish daily, they will stay happy and healthy.

    Read more

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  • White Spots on Goldfish: Causes, Treatment & Prevention
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    White Spots on Goldfish: Causes, Treatment & Prevention

    Learn what causes white spots on goldfish, how to treat Ich, fungal, or bacterial infections, and tips to keep your fish healthy and stress-free.

    Table of Contents

    1. What Do White Spots on Goldfish Look Like?
    2. Common Causes of White Spots in Goldfish
    3. How to Treat White Spots in Goldfish
    4. Prevention: How to Keep Your Goldfish Healthy
    5. When to Call a Vet or Fish Expert
    6. Faq
    7. Conclusion

    If you keep goldfish, you may have noticed small white spots on their body, fins, or gills at some point. These tiny white dots can be alarming, especially if you’re a new fish owner. But don’t worry — not all white spots mean something bad, and many of them can be treated if caught early.

    What Do White Spots on Goldfish Look Like?

    White spots usually appear as small, grain-like dots on the body, fins, or gills of the fish. They can look like grains of salt or sugar sprinkled on the fish’s skin. In some cases, they may also appear as white fuzzy patches or bumps.

    Depending on the cause, these spots may be:

    • Flat or raised

    • Spreading or staying in one area

    • Harmless or dangerous

    • The key is understanding the cause behind these white spots.

    Common Causes of White Spots in Goldfish

    Here are the most common reasons why your goldfish might develop white spots:

    1. Ich (White Spot Disease) – The Most Common Cause

    Ichthyophthirius multifiliis, or “Ich,” is a parasite that infects freshwater fish, especially goldfish.

    What Causes Ich?

    Poor water conditions

    Sudden changes in temperature

    Stress from overcrowding or poor nutrition

    New, infected fish introduced into the tank

    Symptoms of Ich:

    White dots on skin, fins, or gills

    Rubbing or scratching against objects (like rocks or tank walls)

    Lethargy (low energy)

    Staying near the surface or corners of the tank

    Loss of appetite

    Clamped fins (fins held close to the body)

    Is It Dangerous?

    Yes. If not treated, Ich can lead to breathing problems and death. It spreads quickly in a tank.

    2. Breeding Tubercles (Mating Spots) – Harmless!

    If your goldfish is male and has small white bumps on its gills or front fins, it may just be going through a natural change.

    What Are Tubercles?

    Small white spots that appear during the breeding season

    Found only in male goldfish

    Usually appear on gill covers and pectoral fins

    Are They Harmful?

    No! They are normal, harmless, and go away on their own after the breeding season.

    3. Fungal Infections

    Fungus can grow on fish if they have open wounds, injuries, or weak immune systems.

    What It Looks Like:

    • White, cottony patches

    • Usually appears after damage to the skin or fins

    • May spread if not treated

    Is It Serious?

    Yes. Fungal infections can damage the skin and weaken your fish. Quick treatment is important.

    4. Bacterial Infections

    Sometimes white or pale spots can come from a bacterial infection, especially if the fish has ulcers or red sores.

    Signs:

    • Pale white or red spots

    • Swollen or inflamed skin

    • Fin rot or tail damage

    Serious?

    Yes. Needs proper diagnosis and antibiotic treatment.

    How to Treat White Spots in Goldfish

    Once you know the likely cause, here’s how to treat it:

    Isolate the Infected Fish

    Before beginning any treatment, move the infected goldfish to a hospital tank (a separate quarantine tank).

    Why Is This Important?

    • Prevents the spread of infection to healthy fish

    • Allows focused treatment and monitoring

    • Reduces stress for the sick fish

    How to Set Up the Hospital Tank

    • Use some water from the main aquarium to match the water parameters

    • Ensure aeration/oxygen with an air stone or filter

    • Keep the tank clean and monitor the fish closely

    Treatment for Ich (White Spot Disease)

    Increase Water Temperature

    • Raise the tank temperature slowly to 78–80°F (25–27°C)

    • This speeds up the parasite’s life cycle so medicine can work faster

    • Do this gradually (1–2°F per hour)

    Add Aquarium Salt

    • Use 1 tablespoon per 5 gallons of water

    • Only use aquarium salt — never table salt

    • Helps the fish recover and kills parasites

    Use Ich Medication

    • Look for products that contain malachite green, formalin, or copper sulfate

    • Follow the instructions carefully

    • Remove carbon filters from your tank during treatment (they absorb the medicine)

    Clean the Tank

    • Do daily partial water changes (20–30%)

    • Vacuum the gravel to remove parasites hiding in the substrate

    Treatment for Fungal Infections

    • Use antifungal medications (check with your pet store or vet)

    • Keep the water clean and remove sharp objects

    • Salt baths can help mild infections

    Treatment for Bacterial Infections

    Use antibacterial treatments like API Melafix, Seachem Kanaplex, or prescribed antibiotics

    Isolate infected fish in a hospital tank if possible

    Treatment for Breeding Tubercles?

    No treatment needed! They’re completely normal and will go away naturally.

    Prevention: How to Keep Your Goldfish Healthy

    To avoid white spots and other diseases, follow these simple tips:

    TipWhat to Do
    Keep the water cleanRegular water changes (25% per week)
    Use a water test kitCheck pH, ammonia, nitrite, and nitrate levels
    Quarantine new fishKeep new fish in a separate tank for 2 weeks
    Don’t overcrowd the tankMore space = less stress and fewer diseases
    Feed quality foodA strong immune system helps fight infections
    Use a heater (if needed)Avoid sudden drops in temperature

    When to Call a Vet or Fish Expert

    Contact a vet or experienced aquarium shop if:

    • White spots don’t improve after 5–7 days of treatment

    • Your fish is breathing heavily or gasping at the surface

    • The fish is not eating at all

    • The infection is spreading to other fish

    • Getting help early can save your fish!

    Faq

    1. Why does my goldfish have white spots?

    Usually Ich (a parasite), but could also be fungus, bacteria, or breeding spots.

    2. How do I know if it’s Ich?

    Tiny salt-like dots, scratching, tired, not eating.

    3. Are white spots dangerous?

    Ich, fungus, and bacteria are serious. Breeding spots are harmless.

    4. How do I treat Ich?

    Raise water temp, add aquarium salt, use Ich meds, clean tank daily.

    5. Can I use table salt?

    No. Only use aquarium salt.

    6. What are breeding tubercles?

    Small white spots on males during breeding. Normal and harmless.

    7. How do I treat fungus?

    Use antifungal meds, clean water, remove sharp objects.

    8. What if it’s a bacterial infection?

    Use antibacterial meds and isolate the fish if possible.

    9. How do I prevent white spots?

    Clean water, test levels, don’t overcrowd, quarantine new fish, good food.

    10. When should I get help?

    If spots stay after a week, fish isn’t eating, or other fish get sick.

    Conclusion

    White spots in goldfish can be caused by different things — some are harmless, and some need quick treatment. The most common cause is Ich, a parasite that spreads fast but can be treated if caught early. Read more

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  • Enhance Your Aquarium Experience with Creative Ideas
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    Enhance Your Aquarium Experience with Creative Ideas

    Explore innovative aquarium ideas, from aquascaping to DIY decor. Join Fishelly to connect with experts, share tips, and stay updated on the latest trends.

    Table of Contents

    1. Aquascaping: Creating Your Underwater Landscape
    2. Breeding Projects and Species-Specific Tanks
    3. Interactive Feeding Techniques
    4. Educational Displays and Themed Tanks
    5. Aquarium Photography and Videography
    6. Faq
    7. Conclusion

    Aquarium keeping is more than just sitting back and watching the fish swim. Although keeping a healthy aquatic world is fulfilling, there are numerous creative pursuits available to turn your aquarium into a tailored, dynamic ecosystem. Whether you are new to aquarium keeping or an old pro, these creative ideas will take your aquarium experience to the next level.

    Aquascaping: Creating Your Underwater Landscape

    Aquascaping is perhaps the most trendy and imaginative activity for aquarium enthusiasts. It's designing and planting plants, rocks, driftwood, and other components to build beautiful underwater landscapes.

    • Techniques: Try aquascaping styles such as the Iwagumi (a simple stone setup) or the Dutch style (densely planted vegetation with textures and colors in layers).

    • Materials: Employ the finest plants, substrates, and hardscaping materials per aquascaping style.

    • Inspiration: Use natural landscapes like mountains, valleys, or riverbeds as inspiration. If you want a peaceful forest environment or a breathtaking cliffside, aquascaping enables you to create nature's beauty underwater.

    DIY Aquarium Decorations

    You don't have to spend a fortune to personalize your aquarium. You can make your own decorations with safe materials such as clay, rocks, and non-toxic paints.

    • Homemade Decor: Make caves, bridges, or even castles out of natural materials that are safe for your fish.

    • Upcycling: Think outside the box with common items—foam and cement can be repurposed to make a custom tank background, or small glass bottles transformed into stunning ornaments.

    • Safety: Be sure to always use materials that are safe for your fish, with no toxic chemicals or sharp edges that will harm your aquatic pets.

    Breeding Projects and Species-Specific Tanks

    Establishing breeding projects is a fulfilling and interesting part of aquarium keeping. Most hobbyists specialize in breeding certain species of fish, shrimp, or other aquatic creatures.

    • Species-Specific Tanks: Design tanks that are specific to the natural environment of certain species, like a biotope aquarium for cichlids or a shrimp-only tank.

    • Breeding Challenges: Breeding usually involves close monitoring of water parameters, temperature, and tank design, so it is a challenging and thrilling project.

    • Growth Journals: Record your breeding projects and the development of young fish through blogging or photography. This assists in recording your progress and exchanging experiences with fellow enthusiasts.

    Interactive Feeding Techniques

    Enhance your fish feeding practices using innovative methods that simulate their natural instincts.

    • Live Food: Feed live foods such as brine shrimp or daphnia to carnivorous fish, which replicate their natural foraging habits.

    • DIY Feeders: Create feeding tubes or puzzles to promote mental stimulation when your fish play with their surroundings.

    • Training Your Fish: Certain freshwater fish can be trained to respond to their owners and even do tricks, such as swimming through hoops for a treat.

    Educational Displays and Themed Tanks

    Your aquarium can double as a venue for education, whether for family and friends or even public displays.

    • Theme Aquariums: Create a tank featuring a particular educational theme, such as an Indo-Pacific coral reef or an Amazon River basin biotope. Study and replicate the habitat to duplicate real-world systems.

    • Interactive Learning: Utilize your aquarium as a tool to educate others on conservation, water ecosystems, or the particular requirements of aquatic species.

    • Public Displays: Consider setting up an aquarium at a local community center, school, or office to inspire others and spread awareness about aquatic life.

    Aquarium Photography and Videography

    Once you’ve created a beautiful aquarium, capture its beauty through photography or videography.

    • Photography Tips: Learn how to photograph your tank without reflections or blur. Macro photography is a great way to highlight the intricate details of fish patterns or plant textures.

    • Videography: Time-lapse videos may also reveal plant growth or breeding. You may also capture feeding sessions or tank mate interactions, and even host your own aquarium YouTube channel where you can share your work.

    Faq

    1 What is aquascaping, and how do I start?

    Aquascaping is designing underwater landscapes with plants and materials. Start by choosing a style and selecting suitable plants and decorations.

    2 Can I make my own aquarium decorations?

    Yes, you can create safe DIY decorations using materials like clay and rocks, ensuring they’re fish-friendly.

    3 What types of fish can I breed in my aquarium?

    You can breed species like fish or shrimp by creating species-specific tanks and maintaining proper water conditions.

    4 How can I make feeding my fish more interactive?

    Use live foods, DIY feeders, or train your fish to perform tricks for a more engaging feeding routine.

    5 What is a themed aquarium, and how do I set one up?

    A themed aquarium replicates a specific ecosystem, like a coral reef or river. Research and recreate the habitat.

    6 Can I take pictures or videos of my aquarium?

    Yes, use macro photography or time-lapse videos to capture your aquarium’s beauty and activities.

    7 Is aquarium keeping a good hobby for beginners?

    Yes, beginners can start with simple setups and gradually explore more advanced techniques.

    8 How do I maintain a healthy environment in my aquarium?

    Regular water changes, monitoring water quality, and checking fish health are key to maintaining a healthy tank.

    9 Can I use everyday items to decorate my aquarium?

    Yes, repurpose items like glass bottles or foam, but ensure they’re safe for fish.

    10 How can I make my aquarium more educational?

    Set up themed tanks and use your aquarium to teach about ecosystems, conservation, and species care.

    Conclusion

    Aquarium keeping is a fulfilling hobby that allows you to pair creativity with nature. Through aquascaping, creative decorations, breeding fish, or capturing the beauty of your tank through photography, there are countless possibilities to enrich your aquarium. With inspiration and a dash of imagination, your tank can be a living work of art that shows your passion for the ocean world. So, take the plunge, get creative, and build a stunning aquatic world that fills your home with joy.

    Got questions or tips? Drop them in the comments!

    #fishelly_official

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  • Ghost Fish Care Guide: Habitat, Diet, Breeding & More
    FISH ARTICLES• Fetching Data...

    Ghost Fish Care Guide: Habitat, Diet, Breeding & More

    Learn how to care for ghost fish (glass catfish) with tips on tank setup, feeding, habitat, and breeding. Keep these transparent fish healthy and thriving.

    Table of Contents

    1. Native Habitat
    2. How Many Species Exist?
    3. Maximum Size
    4. Optimal Water Temperature
    5. Food Habits & Diet Plan
    6. Male vs Female Differences
    7. Breeding
    8. How They Survive
    9. Why They're Called "Ghost" Fish
    10. Distribution
    11. Dos and Don'ts
    12. Fun Facts
    13. Faq
    14. Conclusion

    With their see-through bodies and ethereal movements, ghost fish—or glass catfish—have enthralled aquarists across the globe. Renowned for their transparent body, ghost fish seem to flow like a ghost in water, which is how they got the name ghost fish. Their distinct appearance, gentle nature, and mesmerizing behavior make them one of the favorite freshwater aquarium dwellers.

    Native Habitat

    Ghost fish are native to Southeast Asia, and they are mostly in Thailand, Malaysia, Cambodia, and Indonesia's slow-moving rivers and streams. They inhabit shaded areas with high vegetation, clear water, and soft bottoms. In the wild, they generally dwell in schools and remain near the river bed or mid-water levels.

    How Many Species Exist?

    There are a few species that are colloquially known as "ghost fish," but the most widely recognized one in aquaria is the glass catfish (Kryptopterus vitreolus). There might be confusion by some sources with other transparent or translucent species, but real ghost fish constitute a small number of about 4–5 species with a transparent body and a catfish-like form.

    Maximum Size

    Ghost fish are not very large. The majority of species reach 4–5 inches (10–12 cm) in length when mature. Even though they are small, their long whiskers and extended body provide them with a dainty, graceful look.

    Optimal Water Temperature

    For ghost fish to remain healthy, the water temperature should be between 75°F to 80°F (24°C to 27°C). Avoid drastic temperature changes, as they are quite sensitive to water condition changes.

    Tank Setup

    Tank Size: Minimum 20 gallons for a small school.

    Substrate: Sand or smooth gravel.

    Decor: Live plants, driftwood, and hiding spaces.

    Lighting: Moderate, with shaded areas to reduce stress.

    Schooling: Keep at least 5–6 ghost fish together—they are social and feel more secure in groups.

    Food Habits & Diet Plan

    Ghost fish are omnivorous and thrive on a balanced diet:

    Staple: Quality flakes or micro pellets.

    Protein: Live or frozen bloodworms, brine shrimp, daphnia.

    Veggies: Blanched spinach or algae-based foods (every now and then).

    Feed small amounts twice daily and don't overfeed to avoid digestive problems and bad water quality.

    Male vs Female Differences

    It's hard to see the difference between males and females, particularly in young ghost fish. However:

    Females will look slightly rounder, particularly when they have eggs.

    Males are usually thinner and more streamlined.

    Breeding variations emerge apparent only in spawning conditions.

    Breeding

    Ghost fish breeding in captivity is uncommon. They naturally breed in the rainy season when water levels are higher and temperature decreases a bit in nature. If attempting to breed them:

    • Mimic rainy season using cooler water and regular water changes.

    • Create abundant plants and shelter spots for egg spawning.

    • Egg scattering takes place with no parental care.

    • Raising fry is challenging and needs specialized care.

    How They Survive

    Ghost fish utilize their ghostly bodies as camouflaged protectors, turning transparent to hide from predators. They are highly sensitive to sound, water quality, and vibrations, making them quickly responsive to environmental changes.

    Why They're Called "Ghost" Fish

    Their ghostly moniker is due to their transparent bodies, in which you can see organs and bones. In the right light, they appear to vanish entirely, which gives them a creepy yet beautiful look—like seeing living shadows pass by.

    Distribution

    Ghost fish inhabit throughout Southeast Asia, particularly in warm freshwater countries. While there are wild populations, most aquarium specimens are captive-bred to meet demand without impacting wild environments.

    Dos and Don'ts

    Do:

    • Keep them in groups of 5 or more.

    • Keep clean, well-filtered water.

    • Feed a protein-rich, varied diet.

    • Provide gentle lighting and plant cover.

    Don't:

    • Keep them isolated.

    • Pair them with fin-nipping fish.

    • Expose them to sudden temperature shifts.

    • Skip water changes or overfeed.

    Fun Facts

    • They are one of the few naturally transparent vertebrates.

    • Their absence of scales leaves them exposed, but also helps to make them appear ghostly.

    • Ghost fish are utilized in educational laboratories to observe internal anatomy without dissecting them.

    • Even though ghost fish are quiet animals, they can detect the slightest vibration of water due to their highly sensitive lateral lines.

    Faq

    1. What exactly is a ghost fish?

    A ghost fish, also known as a glass catfish, is a small freshwater fish known for its transparent body. You can literally see its bones and organs through its skin!

    2. Why are they called ghost fish?

    Because of their see-through bodies. In the right lighting, they almost disappear, looking like floating spirits—hence the name.

    3. Are ghost fish hard to take care of?

    Not too hard, but they do need stable water conditions and a peaceful tank. They’re sensitive to sudden changes and need a bit more care than beginner fish like guppies.

    4. How big do ghost fish get?

    They usually grow up to 4–5 inches (10–12 cm) long when fully grown.

    5. Can I keep just one ghost fish?

    It’s not recommended. Ghost fish are schooling fish and feel stressed if kept alone. Keep at least 5 or 6 together.

    6. What size tank do I need for ghost fish?

    A 20-gallon tank is the minimum size for a small group. Bigger is better if you want more fish or tankmates.

    7. What should I feed them?

    A mix of high-quality flakes or micro pellets along with live or frozen foods like bloodworms and brine shrimp. Occasionally, add veggies like blanched spinach.

    8. Can ghost fish live with other fish?

    Yes, but only with peaceful species. Avoid aggressive or fin-nipping fish, as ghost fish are gentle and can get stressed easily.

    9. What temperature should the water be?

    Keep the water between 75°F to 80°F (24°C to 27°C). Avoid sudden temperature changes—they’re sensitive to that.

    10. Do ghost fish glow or light up?

    No, they don’t glow. They’re transparent, not fluorescent or bio-luminescent.

    11. Can I breed ghost fish at home?

    It’s tricky. They rarely breed in home aquariums unless you simulate their natural rainy-season conditions. Even then, raising the babies is a challenge.

    12. How do I tell if my ghost fish is male or female?

    It’s tough to tell. Females tend to look rounder, especially when they’re carrying eggs, while males are usually slimmer.

    13. Why do my ghost fish keep hiding?

    They like shaded, quiet areas with plants. Also, if they feel stressed or threatened, they’ll hide more. Keeping them in groups helps them feel safer.

    14. Do ghost fish need plants and decorations in the tank?

    Yes! They feel more comfortable with live plants, driftwood, and hiding spots. It helps mimic their natural environment.

    15. How long do ghost fish live?

    With good care, they can live for several years—usually around 5 to 8 years.

    Conclusion

    Ghost fish are not merely a pretty face in the aquarium—they're a fascinating combination of beauty, mystery, and science. Their striking appearance, docile nature, and schooling tendency make them a delight to watch. But they need proper care, stable water conditions, and a peaceful tank environment to live.If you're seeking to give your tank a hint of the unusual, ghost fish are an ideal choice. Properly set up and cared for, these underwater spirits can survive for many years, adding quiet beauty to your aquatic world.

    Got questions or tips? Drop them in the comments! ​ #fishelly_official ​ Fish Community Read more

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  • Why Your Fish is a Picky Eater: How to Fix It
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    Why Your Fish is a Picky Eater: How to Fix It

    Wondering why your fish won’t eat? Learn the top reasons behind picky eating in aquarium fish and get actionable tips to improve their appetite and health.

    Table of Contents

    1. Understanding Fish Feeding Behavior
    2. Common Reasons Fish Become Picky Eaters
    3. How to Fix It: Tips to Get Your Fish Eating Again
    4. When to Seek Help
    5. Faq
    6. Conclusion

    Feeding time is supposed to be one of the most enjoyable parts of owning fish. But what happens when your fish turns its nose—or rather, its gills—up at the food you offer? A picky eater in your aquarium can be frustrating and concerning. Don't worry—there’s usually a reason behind it, and even better, there’s usually a solution. Let’s dive into why your fish might be fussy and what you can do about it.

    Understanding Fish Feeding Behavior

    Before labeling your fish as "picky," it’s important to understand that fish have natural feeding instincts shaped by their species, environment, and past experiences. A wild-caught fish may behave differently from a tank-bred one. Some fish are grazers, others are hunters. Their feeding schedule, preferred food type, and behavior can all vary dramatically.

    Common Reasons Fish Become Picky Eaters

    1. New Environment Stress

    When you add a fish to a different tank, it may take time to adapt. Relocation stress, new water conditions, or strange tank mates can cause loss of appetite. During this time, it is common for them not to eat for a few days.

    2. Wrong Type of Food

    All fish do not eat flakes or pellets. Herbivores require greens such as algae wafers or blanched vegetables, whereas carnivores eat live or frozen food such as brine shrimp, daphnia, or bloodworms. Presenting the incorrect diet will result in rejection.

    3. Poor Water Quality

    Ammonia spikes, low oxygen, or improper pH levels can make the fish ill and uninterested in food. Even if the water appears clean, it may not be healthy. A test kit will assist you in determining unseen problems.

    4. Overfeeding or Feeding at the Wrong Time

    Overfeeding your fish too frequently spoils their appetite. Most fish are well on a once-or-twice-daily regimen. Furthermore, feeding them when they're not active (e.g., immediately after lights on/off) leads to waste.

    5. Spoiled or Low-Quality Food

    Fish have sensitive olfactory senses and can smell spoiled or rancid food. Stale flakes or frozen food that's stored incorrectly loses nutritional value and taste, and they become unappealing.

    6. Illness or Parasites

    If your fish is lethargic, hiding, or showing physical signs such as bloating or spots, fussy eating can be a sign of illness. In this event, it is advisable to go see a vet or aquatic specialist.

    How to Fix It: Tips to Get Your Fish Eating Again

    Be Patient and Observant

    Watch your fish's behavior and feeding reaction. If they're nosing around the food but not taking bites, switch to a different type or brand. Be patient—particularly with shy or newly added species.

    Provide Variety

    Fish, like humans, like variety. Alternate between flakes, pellets, live/frozen food, and even vegetables. For herbivores, blanched spinach, peas, or zucchini may work. For omnivores, a protein treat once or twice a week can help spark appetite.

    Soak Dry Foods in Tank Water

    Soaking dry food in tank water softens it, releases its aroma, and makes it more digestible. This trick will tempt even the most finicky fish.

    Feed Small Portions

    Instead of feeding your fish too much, feed small portions and watch their response. If they accept it, you can always provide a bit more.

    Maintain a Feeding Schedule

    Attempt to feed your fish at the same time every day. Fish tend to learn habits and look forward to meals, and this can enhance appetite.

    Enhance Tank Conditions

    Regularly check your water parameters. A clean environment promotes healthy eating. Include plants, shelters, and eliminate stressors such as aggressive tank mates or loud environments.

    When to Seek Help

    If your fish always won't eat for over a week, or if it's losing weight, swimming erratically, or demonstrating disease symptoms, call a fish veterinarian or aquatic specialist. Early treatment can make a huge difference.

    Faq

    1. Why won’t my fish eat after moving it to a new tank?

    It’s stressed from the move. Give it a few days to settle.

    2. Do all fish eat flakes or pellets?

    No. Some need live, frozen, or plant-based foods.

    3. What if my fish spits the food out?

    It likely doesn’t like it—try a different type or texture.

    4. Can low oxygen make fish stop eating?

    Yes. Poor oxygen or water quality affects their appetite.

    5. How often should I feed my fish?

    Once or twice a day in small amounts.

    6. Is it okay if my fish skips a meal?

    Yes, occasionally skipping meals is normal.

    7. How do I know if food has gone bad?

    If it smells off or looks discolored, toss it.

    8. Can spoiled food harm my fish?

    Yes, it can make them sick or uninterested in eating.

    9. Should I feed fish at night?

    Only if they are nocturnal. Most eat during the day.

    10. My fish hides and doesn’t eat—why?

    Could be shy, stressed, or unwell. Watch closely.

    11. What veggies can I feed herbivore fish?

    Try blanched spinach, zucchini, or peas.

    12. How long can a fish go without eating?

    Most healthy fish can go a few days; some up to a week.

    13. How can I make food more tempting?

    Soak it in tank water or try live/frozen options.

    14. Why does my fish eat only certain foods?

    They develop preferences or might need specific nutrients.

    15. When should I get help?

    If your fish hasn’t eaten in 5–7 days or shows signs of illness.

    Conclusion

    Picky eating is more prevalent in fish than you may realize—and it's nearly always correctable. With a little observation, experimentation, and TLC, you can get your fish back to loving mealtime again. Keep in mind: happy, healthy fish begin with a thoughtful keeper.

    Got questions or tips? Drop them in the comments!

    #fishelly_official

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  • Summer Care Guide: Protect Your Aquarium Fish Effectively
    AQUARIUM CARE & MAINTENANCE• Fetching Data...

    Summer Care Guide: Protect Your Aquarium Fish Effectively

    Learn how to protect your aquarium fish during summer with expert tips on water temperature control, stress prevention, and essential cooling tools.

    Table of Contents

    1. Why Summer Can Be Hazardous for Aquarium Fish
    2. Dos and Don'ts for Summer Aquarium Care
    3. Fish That Are Sensitive to Heat
    4. How to Keep Aquarium Temperature Stable in Summer
    5. Top Tools to Use for Summer Fish Care
    6. More Tips to Beat the Heat
    7. Faq
    8. Conclusion

    When summer arrives, the temperature outside is not the only thing that starts to rise - your aquarium water temperature can do the same in a very short time. This change can be harmful to your fish, causing them stress, illness, or even death if not properly addressed. Your fish are not just pets - they're family. So, here's a complete guide to assist you in protecting your aquarium and providing an ideal environment during those hot summer days.

    Why Summer Can Be Hazardous for Aquarium Fish

    Fish are ectothermic, and their body temperature is controlled by the temperature of the surrounding water. During summer, room temperatures can be higher than the comfort zone for most species, particularly coldwater and temperate fish.

    Major Dangers of High Aquarium Temperatures:

    Lower Oxygen Levels: Warm water contains less dissolved oxygen, stressing fish.

    Higher Metabolic Rate: Fish are more active, consuming more oxygen and requiring more food.

    Suppressed Immunity: Heat stress compromises their immune system, making them more susceptible to disease.

    Algae Blooms: Increased heat and light promote excessive algae growth.

    Toxic Buildup: Ammonia toxicity increases in warm water.

    Possible Death: Extreme heat can cause fish to suffocate or get heatstroke.

    That is why vigilance and proactive care are necessary during warmer months.

    Dos and Don'ts for Summer Aquarium Care

    DOs (Recommended)

    Check Temperature Twice Daily

    Utilize a digital aquarium temperature and record measures in the mornings and evenings.

    Enhance Aeration

    Insert an air pump or place a hang-on-back filter which agitates the surface to supplement oxygen.

    Apply Cooling Solutions

    Employ an aquarium cooling fan to small configurations or purchase a chiller for medium-sized tanks.

    Restrict Light Exposure

    Light emits heat. Lower the photoperiods or shut off during sunny hours.

    Replace 10–15% water weekly with lukewarm (not cold) dechlorinated water

    Use Timers

    Program your lighting system to minimize manual adjustment and prevent overheating.

    Open the Lid Slightly

    Allow for heat escape but prevent fish jumping or pets/kids accessing the tank.

    DON'Ts (Warnings)

    Avoid Placing Tanks Near Heat Sources

    Place tanks away from windows, ovens, heaters, and electronics.

    Don't Add Ice Cubes Directly

    Ice shocks fish and alters water chemistry. Utilize sealed ice packs or frozen bottles.

    Don't Overfeed

    Food left in tanks spoils quicker at high water temperatures, lowering water quality.

    Don't Ignore Stress Signals

    Look out for gasping, spasmodic swimming, listlessness, or loss of appetite-indications your fish are overheated.

    Fish That Are Sensitive to Heat

    Some species tolerate heat better than others. The following fish are particularly vulnerable during the summer:

    Fish TypeIdeal Temp RangeHeat Risk
    Goldfish18–22°CHigh
    White Cloud Mountain Minnow16–22°CHigh
    Fancy Guppies22–26°CModerate
    Betta Fish24–28°CHigh risk above 30°C
    Arowana24–30°CRisky above 31°C
    Discus28–30°CVery sensitive to fluctuations

    Note: Goldfish and Minnows are coldwater fish. It’s best to place their tanks in basements or air-conditioned rooms during summer.

    How to Keep Aquarium Temperature Stable in Summer

    Holding water temperature in check isn't so much about responding to peaks—it's prevention and habit.

    Proven Cooling Strategy:

    Utilize a Cooling Fan

    Example: Hygger Aquarium Fan – budget and efficient.

    Install an Aquarium Chiller

    For over 100L tanks, an HC Series chiller by Hailea gives tight control.

    Float Frozen Water Bottles

    Sealed frozen bottles floated inside the tank; take them out after some minutes to not overcool the water.

    Control Room Climate

    Put your aquarium in the house's lowest-temperature corner, use curtains, and place it away from the sun's rays.

    Add Live Plants

    They are encouraging oxygen production and reduce stress due to realistic living environments.

    Automate Monitoring

    Equipment like Inkbird temperature controllers can alert you if temps get out of range.

    Top Tools to Use for Summer Fish Care

    ToolPurposeTrusted Brands
    Digital ThermometerCheck water temperatureFluval, Inkbird
    Aquarium Cooling FanReduce water heatHygger, ISTA
    Aquarium ChillerCool large tanksHailea
    Air PumpImprove aerationTetra, Eheim
    Smart ControllerMonitor & auto-controlInkbird ITC-308S
    Aquarium Test KitMonitor water parametersAPI Master Kit

    More Tips to Beat the Heat

    • Replace evaporated water daily with dechlorinated cool water.

    • Observe fish activity closely—early action saves lives.

    • Offer small amounts to avoid waste buildup.

    • Store an emergency ice bottle in the freezer—just in case.

    • Don't deep clean during a heatwave—stress and unstable water parameters can kill when fish are already compromised.

    Faq

    1. Why is my aquarium water getting so warm in summer?

    During summer, room temperatures rise and so does the temperature of your aquarium water. Since fish are ectothermic, they’re directly affected by the water temperature, which can rise quickly if not managed properly.

    2. What temperature is too hot for aquarium fish?

    Anything above 28–30°C (82–86°F) can be dangerous for many fish species. Some fish like goldfish or minnows prefer cooler water, so even 26°C might be too much for them.

    3. How can I tell if my fish are stressed by the heat?

    Look for signs like gasping at the surface, unusual swimming, staying still, or loss of appetite. These may mean the water is too warm and low on oxygen.

    4. Can I just put ice cubes in the tank to cool it down?

    No, never add ice cubes directly. They can shock the fish and change the water chemistry. Instead, use sealed frozen water bottles or ice packs.

    5. Is a cooling fan enough for my aquarium?

    For small to medium-sized tanks, yes, a fan can help. But for larger tanks (over 100 liters), you might need an aquarium chiller for better temperature control.

    6. Do I really need to check the temperature twice a day?

    Yes! Temperature can fluctuate during the day. Checking in the morning and evening helps you catch sudden spikes early.

    7. Can I keep the aquarium light on during summer?

    Limit light exposure during hot hours. Lights add heat, so reduce photoperiods or turn them off during the hottest parts of the day.

    8. Should I feed my fish less during summer?

    Yes. Warm water speeds up metabolism, but uneaten food spoils faster, lowering water quality. Feed small amounts and remove leftovers.

    9. Are some fish more sensitive to heat than others?

    Absolutely. Coldwater species like goldfish and minnows are more vulnerable. Bettas, Arowanas, and Discus also suffer if the heat goes beyond their tolerance range.

    10. How can I prevent my tank from overheating?

    Use fans, float sealed frozen bottles, increase aeration, use curtains to block sunlight, and place the tank in a cooler room. Also, consider using a temperature controller like Inkbird.

    11. What’s the best place to keep my aquarium in summer?

    Keep it in the coolest room of your home—basements or air-conditioned areas are great. Avoid direct sunlight, windows, or spots near heat-producing appliances.

    12. Can algae growth increase during summer?

    Yes, warm water and light encourage algae blooms. Reducing light exposure and keeping the tank clean can help control it.

    13. Is it okay to do a full water change when it’s hot?

    No. Avoid deep cleaning during a heatwave. It can stress the fish more. Instead, do small water changes (10–15%) weekly with lukewarm, dechlorinated water.

    14. What tools do I need to keep my fish cool and safe in summer?

    A digital thermometer, cooling fan or chiller, air pump, and smart controller (like Inkbird) can help monitor and maintain the right environment. Live plants also aid in oxygenation and reduce stress.

    15. What should I do if there’s a sudden temperature spike?

    Float frozen water bottles (sealed), increase aeration, and dim or turn off the lights. Act fast and monitor the temperature closely.

    Conclusion

    Summer need not mean disaster for your aquarium—if you're watchful, well-informed, and properly equipped. With proper equipment, regular routines, and swift interventions, your fish can swim through the heat in comfort and safety. Regular checks on the temperature, adjustments, and preventive actions should be taken before your fish exhibit signs of distress. By being proactive and creating a stable environment, you can safeguard your aquatic pets from seasonal difficulties. Your underwater family needs to have the best even when temperatures are soaring.

    Got questions or tips? Drop them in the comments!

    #fishelly_official

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  • Fish Lice in Aquariums: How to Identify, Treat & Prevent
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    Fish Lice in Aquariums: How to Identify, Treat & Prevent

    Discover how to spot, treat, and prevent fish lice in your aquarium. Learn the signs, solutions, and tips to keep your fish healthy and parasite-free.

    Table of Contents

    1. What Are Fish Lice?
    2. Identifying Fish Lice: Warning Signs to Watch Out For
    3. Why Do Fish Lice Infestations Occur?
    4. Treatment of Fish Lice: Step-by-Step Guide
    5. Is Fish Lice Contagious?
    6. How to Prevent Fish Lice
    7. Faq
    8. Conclusion

    Aquarium hobbyists are usually met with some surprise by unexpected problems in keeping their aquatic animals healthy. One such pest that can surprise even seasoned fish breeders is fish lice. These small parasites can cause a lot of havoc in an aquarium if not caught and treated early. In this detailed guide, we're going to take you through everything you need to know about fish lice—how to identify them, how to eliminate them, and how to protect your tank from future infestations.

    What Are Fish Lice?

    Fish lice, or Argulus, are parasitic crustaceans that attach to the skin, fins, or gills of freshwater and marine fish. Fish lice, unlike most parasites that need to be detected using a microscope, can be seen by the naked eye as small, flat, and oval-looking creatures crawling on the body of the fish. They are about 3–8 mm in length, depending on age and type.

    These insects use a pointed piercing mouthpart to suck their host's blood and tissue fluids, inflicting terrible pain, stress, and damage. Infested fish may experience open wounds, which, if left untreated, can cause secondary infections.

    Identifying Fish Lice: Warning Signs to Watch Out For

    Early detection is important. When your fish start acting strange or showing visible flaws, check them closely. Normal signs are:

    Parasites: Tiny, flat, circular lice moving on the body or fins

    Flashing: Rocking against rocks, gravel, or glass due to irritation

    Red or inflamed spots: Typically where the lice have settled and fed

    Frayed or clamped fins: Signs of stress and discomfort

    Lethargy: Decreased activity or hovering near the surface

    Loss of appetite: Refusal to feed or decreased feeding response

    Enlarged gills: Due to lice on gill membranes, making it difficult to breathe

    Employ a flashlight or strong lamp during examination, as fish lice will find shelter in the dorsal region or at the base of fins.

    Why Do Fish Lice Infestations Occur?

    Fish lice do not just magically materialize. They usually penetrate your aquarium from outside sources. Possible reasons include:

    Introducing new fish without quarantine: A serious risk, since lice may ride in without being detected

    Infected plants or decorations: One infected piece can bring in lice

    Shared equipment: Nets, siphons, or containers transferred between tanks

    Poor tank care: Overcrowded or soiled tanks stress fish, reducing immunity

    Wild-caught or untreated fish: These have a higher chance of carrying parasites

    Fish lice can live without a host for a few days in humid surroundings, so cross-contamination among tanks is highly probable.

    Treatment of Fish Lice: Step-by-Step Guide

    After fish lice are identified, early and efficient treatment is important. Here is how to manage them:

    Step 1: Quarantine Infested Fish

    Transfer immediately visibly infested fish to a quarantine tank in order to avoid spreading the parasites. Use the same tank for treatment as well.

    Step 2: Manual Removal (For Small Outbreaks)

    If only a few lice are present and you are able to safely handle the fish:

    • Catch the fish using a soft net.

    • Hold the fish carefully in moistened hands or a wet towel.

    • Pick off visible lice with sterilized tweezers.

    • Dab the site with Betadine or a fish-safe iodine solution.

    Note: This is not an option for very small or stressed fish.

    Step 3: Chemical Treatments

    For major outbreaks, chemical treatments are necessary. Good choices include:

    Use AquaNature Fish Lice & Anchor Worms Treatment

    For larger outbreaks or when manual removal isn’t practical, treat the tank using AquaNature Fish Lice & Anchor Worms Treatment, a trusted solution formulated to target and eliminate parasites like fish lice and anchor worms.

    AquaNature Fish Lice & Anchor Worms Treatment

    Usage Tips:

    • Always follow the dosing instructions on the label.

    • Remove any activated carbon and UV sterilizers before treatment.

    • Increase aeration during treatment to maintain healthy oxygen levels.

    • Treat the entire tank, even if only a few fish show symptoms.

    Step 4: Salt Baths (Supportive Care)

    Salt baths are a mild, supportive treatment:

    • Combine 1–3 grams of aquarium salt per liter of dechlorinated water.

    • Soak the fish for 5–10 minutes, watching closely for signs of stress.

    • Repeat daily for light infestations or in addition to medication.

    • Salt reduces inflammation, increases mucus production, and can help dislodge some external parasites.

    Aquarium Salt

    Is Fish Lice Contagious?

    Yes. Fish lice are contagious and can spread very easily in community tanks. Since they can travel from host to host, it is important to be quick about responding. Even gear, hands, and water from the second tank can be carriers. A single non-treated fish can initiate an infestation that covers the entire tank population.

    How to Prevent Fish Lice

    Prevention is much simpler (and healthier) than curing an outbreak. Here's how to prevent your tank from getting lice:

    • Quarantine new fish for a minimum of 2 weeks

    • Inspect and rinse plants carefully before introducing them

    • Sterilize equipment and tools between tanks

    • Don't overcrowd, which causes stress and vulnerability

    • Keep clean water with frequent changes and filter maintenance

    • Monitor fish behavior daily for early signs

    Good husbandry practices go a long way in preventing almost all aquarium illnesses, including fish lice.

    Faq

    1. What do fish lice actually look like?

    Fish lice are small, flat, oval-shaped parasites that can be seen with the naked eye. They move around on the fish’s body or fins and are usually about 3–8 mm long.

    2. How do I know if my fish have lice?

    Watch for signs like your fish rubbing against objects (called flashing), red or inflamed spots, visible parasites on their skin, frayed fins, or if they stop eating and seem tired.

    3. Can fish lice hurt my fish?

    Yes, fish lice suck blood and can cause wounds. These wounds can get infected, making your fish sick or even causing death if not treated.

    4. Where do fish lice come from?

    They usually hitch a ride into your tank through new fish, plants, decorations, or even equipment that wasn’t cleaned between tanks.

    5. Are fish lice contagious?

    Absolutely. They can spread from one fish to another and even across tanks through shared water or tools.

    6. What’s the best way to treat fish lice?

    Start by quarantining affected fish. For small cases, you can manually remove the lice with tweezers. For bigger outbreaks, use fish-safe medications like Diflubenzuron or Trichlorfon, and consider salt baths for relief.

    7. Can I use salt to get rid of fish lice?

    Salt baths won’t kill all the lice, but they can help ease the fish’s stress, reduce inflammation, and support healing. It’s a good addition to other treatments.

    8. How long should I quarantine new fish to avoid lice?

    Always quarantine new fish for at least 2 weeks before adding them to your main tank. This helps catch and treat any problems early.

    9. Will fish lice go away on their own?

    No, they won’t disappear without intervention. You’ll need to treat your fish and tank properly to get rid of them.

    10. How can I prevent fish lice in the future?

    Quarantine new fish, rinse plants before adding them, clean equipment between tanks, and keep your tank clean. Observing your fish daily also helps catch any issues early.

    Conclusion

    Although minute in size, fish lice can spell major trouble for your aquarium. Early recognition of symptoms, prompt treatment, and good tank hygiene are the solutions to keeping your fish safe. Quarantine new purchases, clean water, and remain vigilant. With the right care, your aquatic pets can live healthy, parasite-free lives.

    Got questions or tips? Drop them in the comments!

    #fishelly_official

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