•March 2003 first specimen captured in the wild
•Caught by commercial fisherman
•Horseshoe Lake, Alexander County, Illinois
•Triploid
•Native of eastern Asia
•Molluscivore
•First imported incidentally with grass carp shipments, later as a food fish and biocontrol for a catfish parasite
•Escapes from a Missouri farm in 1994 Missouri but none recaptured