Illinois River's Flying Carp Problem

One of the most serious economic and environmental threats to Wisconsin in recent years is the imminent invasion of Asian carp into Lake Michigan and the Great Lakes. This invasion must be stopped.

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The bighead and silver carp, more commonly known as Asian carp, are prolific and voracious. The non-native Asian carp can consume up to 40 percent of their weight in food per day and compete directly with commercial and sport fish for food. In some stretches of water, it is reported, up to 97 percent of the biomass is Asian carp. Commercial and sport fish are crowded out, jeopardizing the future viability of these native fish and causing commercial and sport fishing to go elsewhere. Waterfowl production, too, can be adversely affected by Asian carp.


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Not only do Asian carp threaten the health of the ecosystems they invade, but they can be dangerous to people as well. By now I am sure you’ve seen videos of leaping silver carp. Fishermen, boaters, water skiers: Beware. These and other recreational pursuits become dangerous when fish that can grow to 100 pounds come hurtling through the air after being startled by motors. Fish biologist Duane Chapman of the United States Geological Survey likens the impact of being struck by a 20-pound flying fish as similar to being hit by a bowling ball. A fortunate boater who escapes injury may nevertheless be repairing broken windshields.

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