Scientists say climate change is heating the Mediterranean Sea, inviting invasive fish species that harm native populations.

The pearly razorfish (Xyrichtys novacula) is a small marine animal that lives in sandy coastal waters and feeds on creatures ...

Polluted rivers are disrupting swordtail fish mate choice, causing two species to hybridize and highlighting a hidden threat ...

China's decade-long fishing ban shows early ecological recovery signs. Eight fish species exhibited significant increases in ...

When Ohio's Cuyahoga River literally caught fire in 1969, it forced a reckoning that changed federal law forever. Five decades later, scientists returning to those same waterways found something that ...

There’s something oddly calming about watching fish move through water. No notifications, no noise, no rush – just a small world inside glass, carrying on quietly. Maybe that’s why freshwater ...

With razor sharp teeth, armor like scales, and a body that can grow longer than a person is tall, the alligator gar looks ...

In the mystical world of evolution, the extinction of male species has always been seen as an end of evolution, but this rare fish species has survived as a living miracle for 100,000 years without ...

There’s a new fish species in Alabama, but you can’t see it. In fact, as far as scientists know, this fish only lives in one cave in north Alabama that is closed to the public. “There were all these ...