Johannae Rasbara

How To Care For Johannae Rasbara

The Johannae Rasbora (Rasbora johannae) is a relatively rare and colorful species of freshwater fish, known for its peaceful nature and small size, making it an ideal choice for community aquariums. Native to slow-moving streams and rivers in Southeast Asia, particularly Indonesia and Malaysia, this species thrives in well-planted tanks with clear, slightly acidic to neutral water.

Johannae Rasboras are small, reaching only 1.5 to 2 inches (4-5 cm) in length, and are known for their slender bodies. They often have a translucent appearance with a hint of golden or orange coloration along their sides, particularly during breeding. Their delicate beauty and vibrant coloration make them an attractive addition to aquariums, especially when kept in groups.

Being a schooling fish, Johannae Rasboras are happiest when kept in groups of at least six individuals. They are non-aggressive and peaceful, coexisting well with other small, calm fish in a community setup. They are active swimmers, often seen darting around the tank in small schools, which is a natural behavior that enhances their well-being.

These fish are omnivores and will accept a wide range of foods, including high-quality flakes, pellets, live foods like brine shrimp and daphnia, and frozen foods such as bloodworms. They are easy to care for as long as their water conditions are kept stable, preferring soft to moderately hard water with a pH range of 6.5 to 7.5 and a temperature range between 74-80°F (23-27°C).

In the aquarium, they benefit from a tank setup with plenty of plants and hiding spots, as they are somewhat shy by nature. Regular water changes and good filtration are essential to maintaining a clean environment for these delicate fish.

Overall, the Johannae Rasbora is a peaceful, colorful fish that makes a great addition to any community aquarium, particularly when kept in schools with other small, non-aggressive species. Their striking appearance, combined with their easy-going temperament, makes them a favorite among aquarists looking to add charm and activity to their tanks.