How To Care For Dollar Fish
The Silver Dollar Fish (Metynnis argenteus and related species) is a striking freshwater fish named for its resemblance to a shiny silver coin. Its body is round, laterally compressed, and reflective, creating a shimmering appearance as it moves through the water. Closely related to piranhas and pacus, Silver Dollars are peaceful herbivores, making them an excellent choice for large community tanks.
They are schooling fish, meaning they feel most comfortable and display natural behaviors when kept in groups of 5 or more. Alone or in pairs, they can become shy, stressed, or even aggressive. In groups, they show active, graceful swimming and often synchronize their movements beautifully.
Silver Dollars prefer tanks with plenty of swimming space, but they also need hiding spots made from driftwood or plants. However, live plants are often eaten or damaged because of their strong herbivorous diet, so many aquarists use artificial plants or hardy species like Java Fern and Anubias.
Their diet should be focused on vegetable matter: spirulina, algae wafers, and fresh greens. A varied diet keeps them healthy and prevents them from nipping at tank décor. Although they will accept protein-rich foods like brine shrimp or bloodworms, feeding too much protein can cause digestive issues.
They are generally peaceful, but due to their size and schooling activity, they are best kept with other medium to large community fish such as Severums, Angelfish, Gouramis, Plecos, and peaceful catfish. Avoid keeping them with small fish (like neon tetras or guppies), as they may see them as food.
Silver Dollar is a fascinating aquarium fish that stands out with its vibrant colors. It belongs to the family Characidae and is native to the South America.
This species has a care level of Easy to Moderate and requires a minimum tank size of 75 gallons (284 liters). It typically reaches a size of 6–8 inches (15–20 cm).
Preferred water parameters include a specific gravity (sg) of Freshwater, pH ranging from 5.5–7.5, and a temperature between 72–82°F (22–28°C). Additionally, maintaining water hardness within the range of 4–18 dGH is essential.
For stocking, the recommended ratio is 1:5-6 M:F. The Silver Dollar is widely available and has a diverse diet that includes Herbivorous, primarily algae, supplemented with vegetables and sinking pellets.
With a life span of 10–12 years, this species is known for its very easy care requirements. It is an ideal choice for both beginner and experienced aquarists. Providing a well-maintained tank environment with suitable water conditions will ensure the health and vibrancy of this captivating species.
