River Monsters had a show on snakeheads. I think for part of the show jeremy was down in florida nailing them in canals around golf courses. Apparently, there are several anglers down there that routinely catch them for sale at asian markets. From what I remember, they were making like $50 a fish. Not a ton per fish, but keep in mind they were boating one every cast, so not a bad payday for being on the water.