Strawberry Rasbora

Overview

The Strawberry Rasbora (Boraras naevus) is a tiny nano fish from southern Thailand, growing to about 2 cm. Males develop a rich strawberry-red body with a dark blotch in the middle of the flank; females are paler orange with a smaller spot. A group in a planted tank gives a striking flash of red.

Water Parameters

• Temperature: 24–28°C (75–82°F)
• pH: 5.0–7.0
• Hardness: 1–10 dGH (soft water preferred)

Tank Setup

• Minimum tank size: 20 litres for a group of 8–10; larger groups need more space
• Decor: Dense planting, floating cover, leaf litter, dark substrate and gentle flow

Diet

• Base: Micro flake, crushed granules, nano pellets
• Treats: Baby brine shrimp, micro worms, daphnia

Temperament & Tank Mates

• Temperament: Peaceful schooling fish; males spar and display harmlessly
• Best companions: Other nano fish (Dwarf Spotted or Chili Rasboras, Ember Tetras), dwarf shrimp, small snails
• Schooling: Minimum 8–10

Common Issues

• Very small — easily outcompeted for food by larger fish
• Best red colour in soft, slightly acidic water with subdued light
• Feed small portions often; uneaten food fouls nano tanks quickly