If these ever get into the Red it will not be good at all.
http://news.dnr.state.mn.us/2015/06/02/5-bighead-carp-captured-in-st-croix-river-near-stillwater/#more-16454
http://news.dnr.state.mn.us/2015/06/02/5-bighead-carp-captured-in-st-croix-river-near-stillwater/#more-16454