Looking at themselves in a mirror is enough to scare some fish, a new study finds. Fish looking at a mirror showed increased brain activity in regions linked to fear than fish faced with an actual ...

Even though a male cichlid is one tough fish, he may be scared of his own reflection. A new study shows that squaring off to fight a mirror opponent can be worse than fighting a real foe. Male cichlid ...

Fish faced with their reflection in a mirror get aggressive, but also show an unexpected element of fear, which they don't show when fighting a real foe. The discovery raises the possibility that ...

Learn how cleaner wrasse used a mirror and even dropped food to test their reflections, a behavior linked mostly to mammals. A small reef fish may be doing something scientists once thought was ...

Mirrors are often used to elicit aggression in animal behavioural studies, with the assumption being that creatures unable to recognize themselves will react as if encountering a rival. But research ...

Looking at themselves in a mirror is enough to scare some fish, a new study finds. Fish looking at a mirror showed increased brain activity in regions linked to fear than fish faced with an actual ...

Fish become feisty but fearful when facing themselves in a mirror, according to two Stanford biologists. "It seems like something they don't understand," said Julie Desjardins, a post-doctoral ...

Looking at themselves in a mirror is enough to scare some fish, a new study finds. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. Fish looking at ...