Several hundred million years ago, fish began to grow limbs that enabled them to walk across the bottom of the water. Modern mammals, including humans, evolved from these fish. But on Wednesday, a ...

The Australian owners of a koi fish who underwent a 10-minute surgery last week to remove a potentially deadly tumor have posted a video interview featuring their scaled friend happily swimming with ...

“Fish gotta swim, birds gotta fly,” Jerome Kern wrote in a Broadway love song—but while it’s sweet as a lyric, it’s not entirely true. Not only are there plenty of awesome birds that can’t fly, like ...

TOPEKA (KSNT) – Anglers are hooking some strange fish in Kansas that look like they belong in a personal aquarium rather than the local lake. 27 News got in touch with experts at the Kansas Department ...

Stacey O’Shea of The Garden Sanctuary turned the fish's world around — literally — by crafting it a lifejacket out of tubing and AC parts Kelli Bender is the Pets Editor at PEOPLE. She has been ...

Swimming through turbulent water is easier for schooling fish compared to solitary swimmers, according to a new study. Swimming through turbulent water is easier for schooling fish compared to ...

Those who've wondered what lurks in the dark depths of the ocean have a new answer. Scientists working off the coast of Japan say they've managed to capture images of the deepest-swimming fish ever ...

Fish have a sensory system known as the lateral line, which allows them to detect movements, vibrations and pressure gradients in the water. Scientists have now given a robotic fish its own version of ...

A group of pet fish whose motions are tracked by a Japanese gaming YouTuber have allegedly gone on a Nintendo Switch shopping spree, while putting their owner's financial information at risk.