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 ...

A little fish just passed a classic scientific test of self-awareness by recognizing itself in a mirror, scientists have announced. The cleaner wrasse fish, which measures around 10cm in length, was ...

NEW YORK — Scientists report that a fish can pass a standard test of recognizing itself in a mirror — and they raise a question about what that means. Does this decades-old test, designed to show self ...