Electric Barrier

Study: Physical, Electric Barriers Best Defenses Against Asian CarpPlacing dam-like structures in Chicago waterways would be an almost foolproof method of preventing Asian carp from reaching Lake Michigan, while a less pricey electric barrier system also has solid prospects for shielding the Great Lakes from the invasive fish.
Army Corps: Electric Barrier May Need Higher Charge To Halt Asian CarpThe U.S. Army Corps of Engineers plans to boost the charge on electric fences designed to keep Asian carp out of the Great Lakes.