BANGKOK — The world’s largest recorded freshwater fish, a giant stingray, has been caught in the Mekong River in Cambodia, according to scientists from the Southeast Asian nation and the United States ...

From spots to stripes to dazzling colors, these fish have captured our hearts with their good looks. These five made our list of the prettiest fish in fresh water. / Ken Baldwin If you asked people ...

At first glance, a pet fish is a piece of cake. Yes, they are very chill pets compared to dogs and cats, but setting up their environment is where a lot of people flounder (lol!). For this reason, we ...

When saltwater fish long ago evolved to live in fresh water, many of them also evolved a more sophisticated hearing system, including middle ear bones similar to those in humans.

It took three biologists to haul a 240-pound (109 kilograms) fish out of the Detroit River in Michigan last month. The nearly 7-foot-long (2.1 meters) "monster' sturgeon," caught and released by the ...

A new global study reveals that nearly one in four freshwater animal species is at high risk of extinction, scientists warn.

Pufferfish are well-known for their ability to “puff up” into a round, sometimes spiky ball. Some people also know them for the poison their bodies hold. These unique fish are usually found in shallow ...

The world's largest recorded freshwater fish, a giant stingray, has been caught in the Mekong River in Cambodia, according to scientists from the Southeast Asian nation and the United States. The ...

Researchers in Alberta uncovered a fossil fish that rewrites the evolutionary history of otophysans, which today dominate ...