CichlidFish.com - Fish That Think.

JANESVILLE, Wis. (Sept. 24) - A carnivorous alien fish known for its voracious appetite and ability to wriggle short distances on land has been found in southern Wisconsin's Rock River.

The discovery of the 2-foot-long giant snakehead by the state Department of Natural Resources marks the first time the species, a native of Asia, has been found in Wisconsin waters, where officials said it may not survive the winter cold.

"This was a real wake-up call," said Mike Staggs, director of fisheries at the DNR.

A year ago, wildlife officials in Maryland killed six adult and more than 1,000 juvenile northern snakehead, a close relative to the giant snakehead, found in a pond.

the rest of the story can be found HERE where I copied the first part from.

I cought a Snakehead in NC, and generally did not like the experience. It's been caught by fisherman from Florida to Maine, and being that it gets as cold in China, as it does New England, it will probably extend it range much farther then Wisconsin, but despite the problems for other species that that causes, the Stakehead is going to be North America for decades to come, or as long as our lakes and rivers will support life.