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danio
The genus ''Danio'' comprises many of the species of danionins familiar to aquarists. The common name "danio" is used for members of the genera ''Danio'' and ''Devario''.
==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, a surgeon working for the British East India Company. Two of the species included by him in the genus, still remain valid — ''Danio rerio'' and ''Danio dangila''. About a century later (1916) and with many more species described in the meantime, the genus was split; the larger species into ''Danio'' and the smaller species, such as ''D. rerio'', into the new ''Brachydanio''. In 1991, though, the two genera were recombined; most larger species formerly within the ''Danio'' genus, such as the giant danio, have now been reclassified into the ''Devario'' genus. Also, ''Brachydanio'' is now a junior synonym of ''Danio''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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