The giant danio (Devario aequipinnatus) is a species of freshwater ray-finned fish in the family Danionidae, native to parts of South and Southeast Asia. With a maximum length of about 15 cm (5.9 in), it is one of the largest species in the family. It may be found in the aquarium trade.

Zebrafish are used in research at Oregon State University. (Photo by Lynn Ketchum, courtesy of Oregon State University)

The glowlight danio (Danio choprae) is a small, schooling fish closely related to the popular zebrafish Danio rerio. This should not be confused with the GloFish, a trademarked brand of fluorescent zebrafish that appear to glow in the dark under ultraviolet light.

Deutsch: Ein Weibchen des Zebrabärbling, Danio rerio
English: A female zebrafish, Danio rerio
Français : Poisson zèbre, Danio rerio
Norsk bokmål: Hunn av sebrafisk, Danio rerio
Svenska: Hona av sebrafisk, Danio rerio

Zebrafish are used in research at Oregon State University. (Photo by Lynn Ketchum, courtesy of Oregon State University)