Many people just found out that flashlight fish exist, thanks to the viral tweet below. The glowing fish have lights under their eyes that blink on and off. But it turns out that there’s even more ...

Some animals produce their own light, no special effects involved. In certain cases, it helps them hunt or avoid predators.

Fish genetically modified to glow different colors have escaped farms in Brazil and could disrupt biodiversity in the country's Atlantic Forest region. A new study published in Studies on Neotropical ...

Their weird glowing green color makes them look like they've been swimming in a nuclear plant's spent fuel pond. But the zebra fish on sale in Taipei shops have an even stranger background: They're ...

A tiny fish that lives in the icy waters off the coast of Greenland may be unassumingly small, but scientists have found it’s exceptional in more ways than one. The variegated snailfish is full of ...

Sean Burgess (right) and Bruce Draper, professors in the UC Davis College of Biological Sciences, are using zebrafish to detect chemicals that may cause reproductive harm. The GloNad fish glow red or ...