With powerful jaws and a voracious appetite, they can take down much larger animals. Officials warn of dangerous fish ...

Do you remember the classic children’s story, “The Ugly Duckling,” about a little bird who is born looking very different ...

A striking, silver-colored fish commonly kept as an aquarium pet has been hiding in plain sight in the Philippines' largest ...

A bill has been proposed to address the issue. Researchers issue warning after uncovering ugly truth about fish caught in San Francisco Bay: 'That definitely harms us' first appeared on The Cool Down.

Barred owls, with their vivid brown stripes, are acting like bullies of the forest in the Northwest, driving their smaller ...

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!

New Zealand has around 1,400 marine fish species, including 300 endemics and 54 freshwater species, many of which are declining or threatened, according to the Mountains to Sea Conservation Trust.

Among the other contestants in the "Fish of the Year" competition, most were classified as endangered or vulnerable species—except for the blue cod, which finished in last place with just 260 votes.

An amphibious mouse with webbed feet and an unsightly blob-headed fish are among the more than two dozen new species discovered by scientists in a remote region of the Peruvian Amazon rainforest.

Ruben Rodriguez caught a fish so ugly and with such a nasty personality that it may go down as one of the best fish stories out of Ascarate Lake -- maybe as good as the one about "Old Whiskers ...

A bizarre and ugly fish that has been around for hundreds of millions of years has been discovered to have the most DNA of any animal ever found. These South American lungfish (Lepidosiren ...