Wrasse fish use hard surfaces as tools to crack open prey. This behavior shows flexible thinking and environmental awareness.

Scientists have debunked the belief that using tools is unique to mammals and birds, after documenting tropical fish that ...

New research led by Macquarie University has documented tool use in five species of wrasse fish across the western Atlantic, ...

This story appears in the May 2019 issue of National Geographic magazine. When it comes to horseshoes, one size—or shape—hardly fits all. There are thousands of styles worldwide, and Arvin ...