After detecting Asian carp DNA only 10 km from Lake Michigan, the Illinois Dept. of Resources last night started killing everything in the Sanitary and Ship Canal that runs through the city:
About 8,300 liters of the liquid toxin rotenone were put into a 6-mile stretch of the canal near Romeoville Wednesday night.
More than a dozen boats were to go on the canal later today to begin cleanup operations....
The toxin was put into the water because fears that the carp--which can grow to about 150 cm and 50 kg--are pushing their way north toward Lake Michigan and could devastate the Great Lakes' $7 billion commercial fishing industry. The carp can eat 40 percent of their body weight each day.
Apparently they don't taste too good, either.
Since the Canal runs backwards, thanks to an engineering trick in 1901 that stopped us poisoning our drinking water (and started us poisoning Peoria's), the carp may not make it all the way to the lake. Except for that jumping thing they do, when they launch themselves in the air the same way pigs don't, and have occasionally cleared 20 meters.