Blue danio

The blue danio, Kerr's danio or turquoise danio (Danio kerri), is a tropical fish belonging to the genus Danio in family Danionidae.

Blue danio
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Danionidae
Subfamily:	Danioninae
Genus:	Danio
Species:	D. kerri
Binomial name
Danio kerri (H. M. Smith, 1931)
Synonyms
Brachydanio kerri H. M. Smith, 1931

Distribution and habitat

The blue danio is found on the islands of Langkawi and Ko Yao Yai in Malaysia.^{[citation needed]}

Description

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.

In the aquarium

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 often kept in water with a 6.5 – 7.0 pH, a water hardness of 8 – 12 dGH, and a temperature range of 73–77 °F (23–25 °C).

Mating

Blue danios are egg-scatterers that spawn over coarse gravel beds. They will typically spawn at the first light of day.^{[citation needed]} The eggs will hatch in about 36 hours.

Etymology

The taxonomic name honors A.F.G. Kerr, who collected the first specimen on Ko Yao Yai in 1929.