| Blue danio | |
|---|---|
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Scientific classification  | |
| Domain: | Eukaryota |
| 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 | |
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The blue danio, Kerr's danio or turquoise danio (Danio kerri), is a tropical fish belonging to the genus Danio in family Danionidae.
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 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).
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.
The taxonomic name honors A.F.G. Kerr, who collected the first specimen on Ko Yao Yai in 1929.
