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

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 ...

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

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

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. With a color palette brighter than a bag of Skittles, you’d ...

Do you know that the fish here in Hawai‘i go to the dentist on a regular basis to have their teeth cleaned? From large sharks to young yellow tangs, they all get free dental work, but they must go to ...