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

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 ...

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

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

Brian Moorhead, an environmental scientist with SRP, said it’s cheaper and easier to use fish than humans when it comes to removing those plants.