When told about a strange, fanged fish that had washed ashore on an Oregon beach, the Seaside Aquarium folks knew what kind ...

Frogfish are some of the most colorful creatures under the sea — and some of the most unique, too. They look more like frogs ...

Fossils of Tiktaalik roseae blended fins with hints of limbs and sported a flat head suited for peering above the waterline.

Some creatures are dimensional travelers. Whether it be squirrels flying through the air or big cats gliding gracefully ...

Researchers discovered tiny features on sculpins' fins which may enable them to cling firmly in harsh underwater environments.

These are the prettiest freshwater fish, from vibrant brook trout and pumpkinseed sunfish to majestic lake sturgeon. Check out how these species made our list!

What do you do with a bizarre-looking dead fish that’s missing an eyeball and could be mistaken, at a distance, for a monster ...

Invasive fish species is known for breathing on land, 'walking' to new water. It harms nature in Mississippi; kill it on ...

Researchers discovered tiny features on sculpins' fins which may enable them to cling firmly in harsh underwater environments. On a wave-battered rock in the Northern Pacific Ocean, a fish called ...

After netting about 900 trapped fish, biologists moved them upstream to an ice-free area of the Snake River in Grand Teton ...

Last Thursday, Grogan and a few volunteers used a rugged amphibious all-terrain Hägglunds vehicle to get out to the whale ...