Fierce and gigantic, if you ever see or come across an arapaima fish along the rainforest rivers of the Amazon, then you will ...

Bucks County residents have reported "Frankenfish" sightings over the past several days. Here's how to identify the invasive northern snakehead.

Most carnivores have teeth to grasp and eat prey, so marine animals with teeth are not uncommon. Sharks, dolphins, eels, whales, many fish species, and marine mammals like seals and sea lions have ...

It’s not what you do, it’s how readily you do it. Rapid evolutionary change might have more to do with how easily a key innovation can be gained or lost rather than with the innovation itself, ...

Drum fish are given their unique name not because they have drums in their bodies, but because they let out croaker sounds ...