The report about a snakehead in Pickwick Lake from this site on Sunday. If you don't want to go there, it says an angler near Waterloo caught what unidentified "local wildlife biologists" identified as a snakehead and adds that the fish is being kept at a local restaurant on ice.
The Tennessee River is so vast I seriously doubt that a population of snakeheads would decimate any other species, but the bottom line is we don't need the headache or hassle. They are found in the Potomac River and aren't going away. Whether this is a freaky isolated case or the first of what may be our future with snakeheads, we'll have to see.