A Muppet-faced fish with a lanky body more than 6 feet long gulped down plankton in Earth's ancient oceans about 92 million years ago, a new study finds.
Find out everything there is to know about fish and stay updated on the latest news with the comprehensive articles, interactive features and fish pictures at LiveScience.com. Learn more about these fascinating creatures as scientists continue to make amazing discoveries about fish.
The ocean can be a deep and dark place, but the so-called "ninja" shark can light up its surroundings with a dimly glowing head, a new report says.
A tourist to the Red Sea left with an unwanted souvenir: a pair of fish jaws in his eyelid, according to a new report of the case.
Before the dinosaur age, the coelacanth — a hefty, mysterious fish that now breathes with its gills — sported a well-developed lung, a new study finds.
When boy guppies pester the girls they like, it can actually make the female fish better at swimming away, a new study finds.
A stroll on the beach turned strange for two co-workers this week when they stumbled upon a giant (and newly deceased) deep-sea creature that had made its way ashore.
Hearts have become iconic symbols of Valentine's Day, but when it comes to hearts in the real world, one size doesn't fit all — particularly in the animal kingdom.
A sex-changing California fish is growing bigger and gobbling up more sea urchins after a decade of protection, a new study finds.
Research results will have implications for many other lakes in the U.S. and around the world that are also experiencing toxic blooms.
That fish on your plate may not be what you think — and there's a good chance that shrimp isn't either.
Shrimp varieties may not be as familiar as fish, but that doesn't mean the ones on your dinner plate are what they should be.
How long can a fish survive out of water? Long enough, it seems, for a 120-foot (37 meter) tube to vacuum up the fish and shoot it upriver, closer to the salmon's spawning grounds, research shows.