From BoingBoing:
Meet the northern snakehead, a horrifying fish that is an invasive species and can breathe out of water and walk on land—and it's just been spotted in Louisiana for the first time. This fish truly is the stuff of nightmares. According to this National Geographic video, not only can the northern snakehead travel across land and live without water for up to three days, it also has a massive appetite, razor sharp teeth, and snapping jaws that can tear human flesh. Poor thing, it's almost like it was literally designed to be a monster in a horror film.
And now it's in Louisiana, which I guess isn't a total surprise since it's already made its way to Georgia, Florida, Virginia, and elsewhere across the United States. NOLA.com explains....
....MUCH MORE
The fish have apparently migrated up the Mississippi. From the Kansas City Star:Invasive fish spotted in Missouri can even be found on land. Kill it if you see one