HAGERSTOWN, Md. (AP) - The Maryland Department of Natural Resources says northern snakehead fish have made their way into the Chesapeake and Ohio Canal, and almost certainly the upper Potomac River.
Fishery managers are urging people to catch and kill the predatory fish.
Snakeheads are native to China, Korea and Russia. They can breathe air, survive on land and adapt and thrive in foreign environments.