Brilliant Rasbora (Rasbora borapetensis) is a small, peaceful freshwater fish prized for its shimmering metallic body and elegant schooling behavior. Its vibrant coloration makes it an attractive addition to community aquariums.
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Brilliant Rasbora (Rasbora borapetensis) is a small, peaceful freshwater fish prized for its shimmering metallic body and elegant schooling behavior. Its vibrant coloration makes it an attractive addition to community aquariums.
Slender, laterally compressed body with metallic silver or copper sheen. Small, transparent fins with subtle hints of orange or red on the dorsal and caudal fins. Males are slightly more brightly colored with slender bodies; females are rounder and paler.
4–6 years with proper care
Omnivorous; feeds on high-quality flakes, micro pellets, frozen foods, and live foods such as daphnia, brine shrimp, and micro worms. Occasional blanched vegetables like zucchini or spinach support health and enhance coloration.
Brilliant Rasboras are perfect for community aquariums due to their peaceful nature, striking coloration, and active schooling behavior. They bring charm and movement to planted tanks.
Beginner to Intermediate – hardy, but prefers stable water and proper schooling conditions.
20+ gallons (for a small school)
6.5 to 7.5
5–15 dGH
74–80°F (23–27°C)
2 inches
Small tetras, rasboras, dwarf gouramis, peaceful danios, other gentle schooling fish. Avoid aggressive or large species.
Large, aggressive, or fast-moving species that may outcompete or stress them.
Rasbora borapetensis
Cyprinidae
Southeast Asia – Thailand and Cambodia; slow-moving rivers and streams with vegetation.
Highly social; best kept in schools of 6 or more. Peaceful and compatible with other small community fish.
Feed 2–3 times daily with flakes, micro pellets, frozen/live foods. Supplement occasionally with finely chopped or blanched vegetables to enhance coloration and health.
Egg-scatterer; deposits eggs among fine-leaved plants or spawning mops. Adults do not guard eggs. Condition males and females with protein-rich live foods before spawning. Fry feed on infusoria or newly hatched brine shrimp.
pH: 6.5–7.5, Temperature: 74–80°F (23–27°C), Hardness: 5–15 dGH, Ammonia/Nitrite: 0 ppm, Nitrate: <20 ppm
Sensitive to poor water quality; prone to stress, ich, and bacterial infections if water parameters fluctuate. Maintain clean water, stable conditions, and appropriate school size.
Peaceful, active, and social. Best kept in schools of 6 or more to promote natural schooling behavior. Compatible with other small, gentle community fish.
Native to Southeast Asia, mainly Thailand and Cambodia, Brilliant Rasboras inhabit slow-moving rivers and streams with dense vegetation. Adults grow up to 2 inches. They thrive in planted aquariums with open swimming areas and moderate water flow. Suitable for beginner to intermediate aquarists, they are hardy, peaceful, and show vibrant coloration when kept in proper school sizes.