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

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

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

Fish introduced to a mirror began to act strangely, swimming upside-down or spreading their fins. They also tried to scrape a mark from their throats. Reading time 5 minutes New research seems to ...

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 ...