This Bighead Asian carp was found in Lake Calumet along the Chicago Area Waterway System on June 23, 2010.
Officials say an Asian carp has been found for the first time beyond the electric barriers constructed to keep the dreaded invasive species out of the Great Lakes.
Officials say they'll use electrofishing and netting to remove any carp from the lake.
Scientists and fishermen fear that they if the carp become established in the Great Lakes, they could starve out popular sport fish such as salmon and walleye. They can grow to 100 pounds and 4 feet.