''Opsarius pulchellus'', is a species of fish in the family

Danionidae The danionins are a group of small, minnow-type fish belonging to the family Danionidae. Species of this group are in the genera clades ''Danio'' and '' Devario'' (which also includes ''Chela'', ''Laubuka'', ''Microdevario'', and ''Microrasbora ...

, with the largest individual recorded being 11 cm long. "Pulchellus" is a Latin diminutive meaning "beautiful".

Range

''O. pulchellus'' inhabits Indochina (Mekong River) and a small part of China (along the Mekong). They are mainly found in fast flowing rivers or clear hill streams.

Diet

''O. pulchellus'' feeds mainly on the surface of the water, feeding on dead insects that land on the surface.

Threats

''O. pulchellus'' are rarely found in markets, but are exploited by subsistence fisheries and occasionally for the aquarium trade. Habitat degradation through sedimentation increase (e.g. by large-scale damming) may become problematic in the future, especially along the

Mekong The Mekong or Mekong River ( , ) is a transboundary river in East Asia and Southeast Asia. It is the world's twelfth-longest river and the third-longest in Asia with an estimated length of and a drainage area of , discharging of wat ...

and

Chao Phraya The Chao Phraya River is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand. Etymology Written evidence of the river being referred to by the ...

References

External links

*https://www.practicalfishkeeping.co.uk/features/mackerel-barb-opsarius-pulchellus/ Fish of Thailand pulchellus Taxa named by Hugh McCormick Smith Fish described in 1931 {{Danioninae-stub