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Serious risk from only a handful of Asian carp in Great Lakes

Asian carp
Asian carp

Scientists from Canada say only a small number of Asian carp might be enough to pose serious threats to native fish in the Great Lakes. 

Kim Cuddington of the University of Waterloo says there's a 50-50 chance of the bloated carp gaining a foothold if only 10 of them find their way into the Great Lakes. 

If 20 fish make it through, she says the probability of major damage could be 75-percent under some conditions. 

An electronic barrier is keeping the Asian carp out of Lake Michigan for now, but Cuddington says it's not likely that the fast-growing fish can be kept out of the Great Lakes forever. 

She says the amount of time to create a large population of bighead and silver carp would depend on how old the carp are when they spawn.

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