A small tropical fish may possess a sophisticated type of self-awareness only ever seen in humans, scientists have said. Researchers have discovered that the bluestreak cleaner wrasse – which ...

Lab experiments led by a team at Osaka Metropolitan University in Japan revealed the cleaner wrasse will check its body size ...

Researchers have discovered that some social fish have the social awareness required to recognize themselves and other fish they know, by their faces, in pictures, a first for non-human animals.

“The findings might fundamentally overturn the common belief that fish lack minds.” For the experiment, the team used bluestreak cleaner wrasse, a species measuring more than 10 centimeters ...

A more precautionary approach needs to be taken to manage stocks of a fish described as a “keystone species” in Scotland, an expert has said.