Why does a Caribbean angelfish sometimes resemble its Indo-Pacific cousin, even though they have never lived in the same ...

The research maps biofluorescence across 459 glowing fish species and shows just how varied the colors have become.

Do fish bay at the moon? The answer to that question may also point to a way to protect the ocean’s damaged coral reefs. That's a vital goal for the approximately one billion people – most of them in ...

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

Using a non-threatening species as a shield may be the best way for the reef fish to catch their next meal. By Laura Baisas Published Aug 7, 2023 11:00 AM EDT Get the Popular Science daily ...

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

Each year on March 3, World Wildlife Day draws global attention to the plants and animals that make life on Earth possible.

Animals are forming lasting social bonds with different species, engaging in cooperative hunting and peaceful companionship. Research suggests these cross-species relationships stem from cognitive ...