Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to inspect and remove the spots—far faster than seen in earlier tests. Even more ...

In the current study, the scientists observed new behaviors during a series of mirror test experiments, a widely used method ...

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

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

Cleaner wrasses (Labroides dimidiatus) thrive in coral reefs around the world. But they’re more than just another pretty face ...

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 ...

Researchers at Osaka Metropolitan University in Japan have discovered a previously undiscovered behavior in cleaner wrasse (Labroides dimidiatus ...

Physicists have demonstrated that waves can bounce off boundaries in time, not just in space, producing signals that behave as time-reversed copies of the original. These experiments, conducted in ...

What Is the Mirror Test? The mirror test is a scientific experiment developed by psychologist Gordon Gallup Jr. in 1970 to measure self-awareness in animals. The test involves placing a visible mark ...

President Trump stormed into the Capitol on Tuesday night to extol the first-year performance of his return to power, bash the Democrats as feckless rivals, and make the case for keeping Republicans ...