Operation Silverstream, Bighead caught by the U.S. Fish and Wildlife Service

LOCKPORT, Ill. -- Pictured here is a Bighead Carp, an invasive species fish, caught by the U.S. Fish and Wildlife Service in the Chicago Sanitary and Ship Canal near Lockport, Ill. Thursday, Dec. 3, 2009. The Asian Carp Rapid Response Workgroup in coordination with U.S. Army Corps of Engineers and the Illinois Department of Natural Resources delivered Rotenone, a fish toxicant, into the ship canal to remove the threat of the Asian Carp in the Great Lakes. (U.S. Coast Guard photo by Chief Petty Officer Robert Lanier)