Marine food webs are highly complex. Until now, researchers have been unable to understand exactly how they are affected by ...

The researchers studied tissue from over 120 fish. They found that 50 to 60 percent of their diet came from ocean’s twilight ...

The return of apex predators such as sharks can restore critical ecological balance to coral reefs, creating healthier ...

The invasive northern snakehead, which has recently been appearing in Missouri and other states, must be eradicated, officials say.

Here's why the world's largest known predatory fish, the great white shark, is the ultimate apex predator of the ocean. Great ...

Fish like roach that migrate between lakes and streams have larger eyes with bigger pupils, improving vision in low light.

Researchers studying pharmaceutical pollution tracked salmon that had been exposed to anti-anxiety medication. The fish appeared to lose their inhibitions.