From armored bodies to massive appetites, these catfish are built to survive. This video breaks down five different catfish species, how big they get, and what they actually eat.

The catfish are dark green or black, with a paler belly. Similar to other catfish species, they have long, eel-like bodies and flat heads with wide mouths. They have two long barbels on the upper jaw ...

In a river of eastern Brazil, an “armored” creature swam along searching for the next meal to sink its “copper colored” teeth into. But it wasn’t the only one searching. Passing scientists scooped up ...