Asian carp a growing threat in Great Lakes

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The Great Lakes are under threat from an Asian carp invasion and environmental officials say the carp could wipe out fishing stocks and, with it, the lakes' billion-dollar fishery.

Officials also said recreational boating could be affected as the carp can grow up to 4 feet long and weigh up to 100 pounds, and the massive fish will occasionally leap up and strike boaters, according to an article in Discover magazine.

Since the carp were found to be moving up the Mississippi River in 2002, agencies have tried to slow them down with various methods, including erecting electric barriers that cost around $9 million.

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