Description
Scissortail Rasbora – Rasbora trilineata
Introduction:
The Scissortail Rasbora (Rasbora trilineata) is a sleek, silvery freshwater fish that earns its name from the unique scissor-like motion of its tail. Reports of growing up to 5-6 inches (12-15 cm) in the wild, this active schooling fish makes an eye-catching addition to large, peaceful community aquariums. Its graceful movement and shimmering body add a subtle elegance to planted tanks, making it popular among both novice and seasoned aquarists.
1. Natural Habitat and Behavior
Native to slow-moving rivers, streams, and lakes across Southeast Asia, the Scissortail Rasbora is accustomed to clear, well-oxygenated waters with ample open space. In its natural habitat, it travels in large schools, grazing on small insects, crustaceans, and other aquatic organisms. In the aquarium, it retains its schooling behavior and prefers to swim in the mid to upper regions of the tank, providing a dynamic presence.
2. Aquarium Setup
For a group of Scissortail Rasboras, a 30-gallon tank or larger is recommended due to their size and active nature. These fish thrive in tanks with open swimming areas and a mix of live plants for aesthetic appeal and added oxygenation. They prefer soft to moderately hard water, with a pH range of 6.0-7.5 and a temperature between 72-79°F (22-26°C). A darker substrate can enhance their silvery coloration, and gentle water movement replicates their natural environment.
3. Diet and Feeding
Scissortail Rasboras are omnivores and enjoy a varied diet. They readily accept high-quality flakes and pellets as a staple but benefit from supplemental live or frozen foods such as brine shrimp, bloodworms, and daphnia. Feeding once or twice daily in small portions helps maintain their health and keeps them active and vibrant.
4. Compatibility with Other Fish
These peaceful fish get along well with other similarly sized, non-aggressive tank mates. They can coexist with species like tetras, danios, peaceful barbs, corydoras catfish, and other rasboras. Because of their larger size and active nature, they should not be housed with very small fish or long-finned species that may feel intimidated. Keeping them in groups of at least 6 or more will encourage natural schooling behavior and reduce stress.
5. Common Challenges and Tips
- Space Requirement: Scissortail Rasboras need ample swimming space. A crowded tank can make them anxious, so avoid overstocking.
- Schooling: They are happiest when kept in groups, as solo individuals may become stressed and shy.
- Water Conditions: Although hardy, they prefer stable water parameters, and weekly water changes are recommended to maintain water quality.
Conclusion
The Scissortail Rasbora (Rasbora trilineata) is a graceful and hardy schooling fish, perfect for adding lively movement to spacious community aquariums. With proper care and a suitable tank setup, these active fish will thrive, enhancing the beauty and harmony of a well-balanced aquarium.
