Noun
danio (plural danios)
(chiefly in combination) Any of various fish of the genera Danio and Devario.
One particular species of these small and undemanding danionines is the zebrafish (Danio rerio). Source: Internet
The Zebra Danio was also used to make genetically modified fish and were the first species to be sold as GloFish (fluorescent colored fish). Source: Internet