Now that an actual real live Asian carp has been discovered beyond the barrier trying to keep it out of Lake Michigan, scientists are trying to discover if the adult male fish was dropped into Lake Calumet or if it is part of a larger population of fish. John Rogner of the Illinois Department of Natural Resources told the Chicago Tribune that the carp, 34 inches long and more than 19 pounds, was found east of the O’Brien Lock, giving it unimpeded access to Lake Michigan. Rogner said fish biologists will use genetic testing to try to determine whether the bighead carp was farm-raised, indicating it might have been dropped off in the lake, or whether it had lived its life in its natural environment. The latter would suggest the carp was among several that perhaps have migrated up the Chicago water system and are now poised to enter Lake Michigan, a potentially dire scenario given how Asian carp have overwhelmed native fish populations in the Mississippi River and lower parts of the Illinois River. Meanwhile, the fish has spurred Great Lakes politicians and activists into calling for immediate action.