In theory, a reaction to an out-of-place mark in a reflection is assumed to be evidence of self-recognition for other animals as well. Chimpanzees, elephants, and dolphins are just some that have ...

A shrimp scrap drifted down the face of a mirror, and a small reef fish tracked it like it was watching a slow-motion ...

Researchers at Osaka Metropolitan University in Japan have discovered a previously undiscovered behavior in cleaner wrasse (Labroides dimidiatus). When presented with a mirror, the tiny fish not only ...

The predictability of the Betta Fish’s behavior sets up an excellent experimental baseline from which to learn more about this species. In the species’ native Thailand, enthusiasts selectively breed ...

Major groups such as the American Heart Association recommend fish as part of a healthy diet; some academics say it is wrong to portray the intelligence and pain sensitivity of fish as comparable to ...

Can we finally retire the myth that goldfish have three-second memories? This oft-cited “fact” has been thoroughly debunked. Scientists have shown that fish can distinguish and remember individuals, ...

Fish oil has long been prescribed as a supplement for mental clarity and focus, but could it be that the cognitive benefits of omega-3 fatty acids come indirectly from an improvement in sleep health?

A shrimp scrap drifted down the face of a mirror, and a small reef fish tracked it like it was watching a slow-motion experiment. The fish, a blue-streak cleaner wrasse, had carried the shrimp upward, ...