Add Yahoo as a preferred source to see more of our stories on Google. To figure out how long ago fish first appeared on Earth you need a way to measure really, really long time intervals. Clocks ...

Get unlimited access to ad-free articles and exclusive content. LiveScience Two types of fish have been shown to use gestures, or sign language, to help one another hunt. This is the first time these ...

The first fish to crawl onto land 375 million years ago was discovered in 2004. It became a media darling. Now, for the first time, you can see it in person. Ted Daeschler, who discovered the first ...

More than 400 million years ago, ancient oceans were teeming with many fish that might seem alien in today’s seas. Back then some wore plates of bony armor and lacked jaws, such as the arandaspids, ...

Neil Sims has a vision. He imagines thousands of red drum fish swimming in the open Gulf, the Florida sun glinting off coppery scales. These red drum are farmed, not wild. They circle inside a ...