The blue danio is found on the islands of Langkawi and Ko Yao Yai in Malaysia.

[citation needed] It is a blue-colored, deep-bodied danio with several pinkish/gold lines from tail to gills which may or may not be continuous, over a powder blue side.

The blue danio is a peaceful, active schooling fish, so is usually kept in groups.

They prefer a well-planted environment, but still need plenty of space to school.

Blue danios are egg-scatterers that spawn over coarse gravel beds.