The marine photographer who captured the footage said it could be the world's first recorded sighting of a black seadevil ...

This is only the second time the species has been recorded while alive. “I thought it was A.I.,” says fish biologist Kory Evans.

According to the organization, the fish is a so-called “black seadevil” known by its scientific name Melanocetus johnsonii. They typically swim between 650 and 6,500 feet below the ocean’s surface.

I write about the world of biology. In the vast, open water, fish rarely swim solo. Instead, they aggregate into schools or shoals as a strategy to combat the omnipresent threats of predators and ...

In swarm research, a new method makes it possible to track the eye movements of fish automatically, non-invasively and in 3D. Researchers explain why this is important for understanding the 'rules of ...

It was the first documented case in North America of invasive northern pike, considered an exclusively freshwater fish, swimming in an estuary, an area where freshwater and saltwater meet.