Danio
Danio is a genus of small freshwater fish in the family Danionidae found in South and Southeast Asia, commonly kept in aquaria. They are generally characterised by a pattern of horizontal stripes, rows of spots or vertical bars. Some species have two pairs of long barbels. Species of this genus consume various small aquatic insects, crustaceans and worms.
Taxonomy
The name "danio" comes from the Bangla name dhani, meaning "of the rice field". Danio was described in the early 19th century by Francis Hamilton. Two of the species included by him in the genus, still remain valid—D. dangila and D. rerio. About a century later and with many more species described in the meantime, the genus was split; the larger species into Danio and the smaller species into the genus Brachydanio. In 1991, though, the two genera were recombined; most larger species formerly within the genus Danio have now been reclassified into the genus Devario. Also, Brachydanio is now a junior synonym of Danio.
Species
These are the currently recognized species in this genus:Danio absconditus Kullander & Britz, 2015 Danio aesculapii Kullander & F. Fang, 2009 Danio albolineatus Danio annulosus Kullander, Rahman, Norén & Mollah, 2015Danio assamila Kullander, 2015Danio catenatus Kullander, 2015Danio choprae Hora, 1928 Danio concatenatus Kullander, 2015Danio dangila Danio dichromatus Britz & Kullander, 2024Danio erythromicron Danio feegradei Hora, 1937 Danio flagrans Kullander, 2012Danio htamanthinus Kullander & Norén, 2016Danio jaintianensis Danio kerri H. M. Smith, 1931 Danio kyathit F. Fang, 1998Danio margaritatus Danio meghalayensis Sen & S. C. Dey, 1985 Danio nigrofasciatus Danio pulcher H. M. Smith, 1931Danio quagga Kullander, T. Y. Liao & F. Fang, 2009Danio rerio Danio roseus F. Fang & Kottelat, 2000 Danio sysphigmatus Kullander, 2015Danio tinwini Kullander & F. Fang, 2009Danio tweediei Brittan, 1956