The blue catfish was never supposed to be in the Chesapeake Bay. In the 1970s, the species was introduced into the James River in Virginia as a trophy fish. From there, it quietly slipped into the Bay ...

Invasive species like the blue catfish and snakehead are threatening ecosystems across Maryland’s waters. Chefs say that if we can’t beat ’em, we should eat ’em. These species vary considerably from ...

Flathead catfish have become a threat to resident species in the Susquehanna River in Pennsylvania. The results of a new study suggest they're outcompeting other predators and reshaping an essential ...

In rivers that once held a balanced mix of native fish, a giant predator now dominates so completely that it has started lunging out of the water to grab unsuspecting pigeons. The wels catfish, a ...

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 ...