Get a Hartford Courant subscription for less than 29 cents per day
CT Now

Young bighead carp swim in a tank in La Crosse, Wis., where scientists with the U.S. Geological Survey are trying to develop a poison pill to kill the invasive species.

Young bighead carp swim in a tank in La Crosse, Wis., where scientists with the U.S. Geological Survey are trying to develop a poison pill to kill the invasive species.Chris Walker
This photo is featured in these articles:
Loading
23°