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Strawberry Rasbora
Boraras naevus
Animalia›Chordata›Actinopterygii›Cypriniformes›Cyprinidae
📍 Southern Thailand
A tiny, jewel-like rasbora with a warm strawberry-red body and a distinctive dark blotch. One of the smallest aquarium fish, it shines in nano planted tanks. Schools beautifully and pairs well with shrimp and other peaceful nano species.
Care Guide
Diet
Strawberry Rasboras are omnivores that require a varied diet of small foods. Feed high-quality micro pellets, crushed flakes, and small frozen foods like brine shrimp and daphnia once daily in small portions. Supplement occasionally with blanched vegetables like spinach to ensure balanced nutrition.
Behavior
These tiny rasboras are active schooling fish that display their best colors and behavior when kept in groups of at least 8 individuals. They are peaceful and timid, preferring densely planted tanks with subdued lighting where they feel secure. They occupy the mid-water column and are most active during dawn and dusk hours.
Breeding
Breeding in captivity is difficult and rarely achieved in home aquariums. They require very soft, acidic water (pH 4.5-5.5), dense vegetation for egg scattering, and pristine water conditions. Fry are extremely small and require infusoria or liquid fry food for the first week before accepting micro foods.
Tank Mates
Similar size and peaceful temperament; excellent algae control without competing for food
Peaceful invertebrates that share blackwater preferences and won't prey on adult rasboras
Similar size and water requirements; both prefer soft, acidic conditions and planted tanks
Comparable size and peaceful nature; both thrive in nano blackwater setups with dense vegetation
Foreground plant that provides shelter and security for this timid species
Dense moss provides essential hiding places and spawning substrate for this shy schooling fish
Common Diseases
Ich (White Spot Disease)
White spots on body and fins, rapid breathing, lethargy, rubbing against objects
Raise temperature gradually to 28-30°C, perform daily 25% water changes, use aquarium salt (1 tsp per 5 gallons) or ich medication; treat for 7-10 days
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, lethargy
Improve water quality with frequent water changes, reduce stocking density, treat with antibacterial medication if severe; ensure pristine conditions as this species is sensitive to poor water quality
Bacterial Infection
Cloudy eyes, open sores, loss of color, appetite loss, torn fins
Perform 50% water change immediately, treat with broad-spectrum antibacterial medication, maintain excellent water quality and temperature stability
Stress-Related Illness
Faded coloration, hiding constantly, loss of appetite, rapid gill movement
Ensure group of at least 8 fish, provide dense vegetation for security, maintain stable water parameters (pH 5.0-7.0, soft water), reduce tank disturbances
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Quick Facts
- diet
- Micro omnivore – micro pellets, crushed flake, baby brine shrimp
- lifespan
- 2–3 years
- max size
- 2 cm (0.8 in)
- tank size
- 5 gallons minimum
- school size
- 10+
- temperament
- Peaceful, schooling
Water it likes
- ph
- 5.0–7.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 1–8 dGH
- temperature
- 72–81°F (22–27°C)