Learn how cleaner wrasse used a mirror and even dropped food to test their reflections, a behavior linked mostly to mammals.

A recent study reveals how tiny reef fish demonstrate advanced awareness by using mirrors to inspect marks placed on their bodies.

Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to ...

Cleaner fish interacted with a mirror in their tank in a way that suggests ‘contingency testing’ intelligence, a higher form of smarts typically found in mammals. This finding coupled with faster self ...

A small coral reef fish can recognize itself in a mirror. This discovery challenges long-held ideas about animal intelligence ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...