Evolving roughly 27 different times in the long history of fish, bioluminescence—the biological production of light—is one of ...

Scientists have discovered the fossilized remains of a new fish species called Ferruaspis brocksi, which lived 15 million ...

Activists say one of the Palestinian co-directors of the Oscar-winning documentary film “No Other Land” was attacked by Jewish settlers and arrested on Monday evening.

While tuna is the most common go-to in the tinned fish aisle, there is much to be said for a number of other options ...

Australian scientists have discovered an ancient freshwater fish fossil with its stomach contents remarkably preserved. In a ...

An endangered gray wolf was found illegally killed in Oregon, wildlife officials said.

Research shows that certain foods really can help with depression and stress. Here’s why—and which foods help most.

But there might be another way to control their rapidly increasing populations. The U.S. Fish and Wildlife Service released a ...

The hunt is on—and we just landed a stunning wild Tiger Oscar! This beautiful fish is headed to our brand-new pond, and the excitement is real. From the catch to the release, this moment brings ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A guitar-shaped ...

Certain types of fish want to create and keep their own territory ... there are not very many fish that can be kept with them. Oscar. Oscars are usually not very aggressive towards other fish ...

With its distinct golden, scaleless body and large eyes, the species showcases a gradual adaptation to its dark cave environment. Researchers are now using the Xingren golden-lined fish to better ...