Yellowtail Rasbora

The Yellowtail Rasbora is a sleek and lively freshwater fish known for its silvery body, subtle dark lateral line, and distinctive yellow-tinted tail and fins. Native to Southeast Asia, this active schooling species adds constant movement and a clean, shimmering look to community aquariums. It is hardy, adaptable, and suitable for both beginners and experienced aquarists.  

Yellowtail Rasbora (Rasbora borapetensis) – Complete Care Guide Description The Yellowtail Rasbora is a sleek and lively freshwater fish known for its silvery body, subtle dark lateral line, and distinctive yellow-tinted tail and fins. Native to Southeast Asia, this active schooling species adds constant movement and a clean, shimmering look to community aquariums. It is hardy, adaptable, and suitable for both beginners and experienced aquarists. Water Parameters Stable, clean water ensures best health: Temperature: 22–28°C (72–82°F) pH: 6.0–7.5 Hardness: 2–12 dGH Tank Size: Minimum 60–80 liters (15–20 gallons) Water Flow: Gentle to moderate Water Changes: 20–30% weekly Care & Maintenance Yellowtail Rasboras are easy to care for with proper setup: Keep in groups of at least 6–10 for natural schooling behavior. Provide a planted tank with open swimming space. Maintain stable water parameters and good filtration. Use moderate lighting to enhance their subtle coloration. Feed a varied diet: flakes, micro pellets, and live/frozen foods (daphnia, brine shrimp). Avoid strong currents. Behaviour & Temperament Peaceful and active schooling fish. Constant swimmers, mostly in mid to upper levels. Non-aggressive and community-friendly. Can be slightly shy in small groups. Display best behavior and confidence in larger schools. Compatibility Ideal for peaceful community aquariums. Compatible with a wide range of small, non-aggressive fish. Avoid aggressive or overly territorial species. Suitable Tank Mates Tetras (Neon, Cardinal, Ember) Other rasboras Corydoras catfish Small gouramis Dwarf cichlids (Apistogramma, Rams) Pencilfish Tank Mates to Avoid Aggressive cichlids Large predatory fish Fin-nipping species Very boisterous or hyperactive fish Fish with incompatible water conditions Pro Tips Keep in larger schools for better coloration and reduced stress. Provide ample swimming space for their active nature. Maintain consistent water quality despite their hardiness. Add plants and décor for a natural environment. Feed a balanced and varied diet. Use a secure lid—they can occasionally jump. Summary The Yellowtail Rasbora is a peaceful, hardy, and active fish that thrives in community aquariums. With proper group size, stable conditions, and compatible tank mates, it adds lively movement and subtle beauty to freshwater setups.