LA CROSSE, Wis. (AP) — Wildlife officials across the Great Lakes are looking for spies to take on an almost impossible mission: stop the spread of invasive carp. Kayla Stampfle, invasive carp field lead for the Minnesota DNR, said the goal is to monitor when carp start moving in the spring and use the tagged fish to ambush their brethren. Political Cartoons View All 1256 ImagesFour different species are considered invasive carp: bighead, black, grass and silver. There is no hard estimates of invasive carp populations in the U.S. but they are believed to number in the millions. Wildlife agencies are still consolidating data on how many invasive carp that real-time tracking has helped them remove, U.S.

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