SUSAN SCOTT PHOTO A striped cleaner wrasse in Raiatea nibbles on Susan Scott’s leg. The wrasses’ customers seem to love the service, flocking to the wrasse cleaning stations usually held in an ...

Before squaring up for a fight, some fish check themselves out in the mirror to make sure they're big enough. This strange behavior was seen in bluestreak cleaner wrasse (Labroides dimidiatus), who ...

Controversial new research shows that a tiny, unsuspecting species of fish can pass a test that’s widely considered the gold standard of intelligence. As far as we can tell, only a few of the most ...

Mirror tests are used to assess an animal’s response to its reflection. Explore how fish react and learn if they possess self-awareness. In February, a team of researchers published a paper showing ...

Bluestreak cleaner wrasse are small, territorial fish that aggressively fend off intruders. But when they have access to a mirror, the fish size themselves up before deciding whether or not to fight.

Cleaner wrasse perform a cleaning service for coral reef fish -- namely eating parasites off their customer's skin. However, what the females of some species actually want is to lure in clients and ...

Only humans and a handful of other primates will attempt to make peace between warring third parties. But now there is a new diplomat on the block: the cleaner wrasse. Cleaner wrasse (Labroides ...

Reef ecology Baby damselfish do better on coral reefs that are inhabited by other fish that keep them free of parasites, a new study has found. The findings are published today in the Royal Society ...

Cleaner wrasse perform a cleaning service for coral reef fish -- namely eating parasites off their customer's skin. However, what the females of some species actually want is to lure in clients and ...