I met the Director for the Cook County Forest Preserves and chatted with him about the Asian Carp problem. He was one of the guys who helped with the 'fish kill' in the Fall. He told me that bighead carp are already in Lake Erie but are not thriving. He said the plankton was more abundant in Lake Erie compared to Lake Michigan. On that basis, he didn't seem to think the Asain Carp would fare very well in Lake Michigan.