So far as we know, no one's thought to bring a hoop down to the river and see if they can, but don't bet against the possibility.
The answer to the above question is, of course, a very scary breed of fish, and for once people are up in arms about this the most monstrous of a long line of invasive species that've descended on the Great Lakes like a plague.
THE CITY OF CHICAGO; ILLINOIS DEPARTMENT OF NATURAL RESOURCES; METROPOLITAN WATER RECLAMATION DISTRICT OF GREATER CHICAGO; US ARMY CORPS OF ENGINEERS; US COAST GUARD; US ENVIRONMENTAL PROTECTION AGENCY; US FISH AND WILDLIFE SERVICE; US GEOLOGICAL SURVEY; GREAT LAKES FISHERY COMMISSION; ILLINOIS DEPARTMENT OF ENVIRONMENTAL CONSERVATION; and the INDIANA DEPARTMENT OF NATURAL RESOURCES, are all interested parties in the search for answers to what promises to become the most serious of crises.
On May 5, the above organizations, which joined to form a group calling itself, "The Asian Carp Regional Coordinating Committee," and which had conducted an initial study last winter, announced a second study, this one to last three months and include a further search for signs of the presence of the fish.
Tradional sampling methods, including gill netting and elecrofishing, did not result in the capture of any asian carp during the initial sampling period, which lasted five weeks. The new plan will use the same sampling methods, but will move the focus of the search to the North Shore Channel, where among other measures, a three day testing period will be carried out.
The north shore channel is an open sewage/drainage ditch that receives water from Lake Michigan, traverses the city of Chicago, and empties into the Chicago Sanitary and Ship Canal.