Devario fraseri

Devario fraseri is a rarely available species from the rivers of northeast India and Bangladesh, associated primarily with the Brahmaputra and Surma-Meghna drainages. It displays the typical devario pattern of multiple alternating blue-silver and gold horizontal bands along an elongated, streamlined body. In the wild it inhabits moderate to fast-flowing rivers in lowland and foothill zones. In captivity it requires clean, well-oxygenated water and a spacious tank of at least 100 L to accommodate its active schooling behaviour. It is highly sensitive to deteriorating water quality, and regular water changes are essential. The species is completely peaceful toward other fish and can be housed with robust tetras, barbs, and medium loaches. Its rarity in the trade means specimens are highly valued by Asian cyprinid enthusiasts.

Water: Temperature 18–25 °C, pH 6.5–7.5, GH 5–12; high water quality essential; frequent partial changes. Tank: 100 L minimum; strong current; open swimming area; tight lid; marginal planting. Feeding: Flake, pellet, frozen bloodworm, cyclops; a varied diet promotes health. Breeding: Egg-scatterer; rarely bred in captivity; specialist conditioning required. Compatibility: Peaceful with medium robust community fish; avoid very timid or nano species.