Family: Cyprinidae
Least Rasbora — a Cyprinidae from Southeast Asia, peaceful, restless swimmers that use every inch. Reaches 3–4.4 cm; groups of 6 minimum; bigger schools calm them. 25–28 °C.
A Cyprinidae species native to Southeast Asia: Boraras urophthalmoides lives bottom-dwelling over gravel. Peaceful, restless swimmers that use every inch. Adults reach 3–4.4 cm. It is one of the aquarium-kept Boraras species we profile, alongside Boraras brigittae, Boraras maculatus, Boraras merah.
Difficulty: moderate. Peaceful, restless swimmers that use every inch. Groups of 6 minimum; bigger schools calm them.
Hold 25–28 °C and keep it stable — 25.0–28.0 °C typical for the genus. Room temperature to heated, depending on origin.
Adults reach 3–4.4 cm; it is bottom-dwelling. Plan for at least 25 litres.
Small surface-oriented omnivore; flakes and tiny live foods. Vary the menu — quality flakes or pellets plus frozen or live foods.
Yes, with care. Peaceful, restless swimmers that use every inch — pair it with Other danios and small rasboras — Form a fast, peaceful upper-water school and skip Slow, timid fish — Outcompeted at the surface.
Its home waters are Southeast Asia — clear streams and rivers over gravel, with moderate, well-oxygenated current.
Low escape risk, but a lid is cheap insurance.
Typical egg-scattering minnow; mop spawning works. Males often slimmer and more colourful.