They have since escaped captivity and have been spreading through the Mississippi River basin. In June , two black carp were captured in the Ohio River about 10 miles downstream from the Indiana state line. Figure 1: A range map of where black carp observations have been reported in the US. An interactive, detailed map of these observations is available from USGS at nas.
Asian carp continue to thrive as an invasive species, local bowfishing aims to change that
DNR offering bounty on black carp
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Asian carp fishermen hook new markets
Faced with the threat that Asian carp could enter the Great Lakes, Michigan is turning to the public for new ideas and plans to offer a prize to whoever comes up with a way to stop the voracious fish. Michigan's global search challenge comes after the U. If they aren't stopped, officials fear the aggressive fish will crowd out prize native fish and hamper recreational boating in large sections of the lakes, which stretch from Minnesota, Wisconsin and Michigan in the west to New York and Pennsylvania in the east and from Ontario, Canada, in the north to Illinois, Indiana and Ohio in the south.
Because they eat several types of aquatic plants, grass carp are sometimes used to get rid of vegetation in man-made ponds, like on golf courses. But that ferocious appetite can be deadly in natural lakes and rivers that rely on those plants. Dettmers says if other invasive species are any indication, what affects Lake Erie could plague the other Great Lakes. He says sterile grass carp have already been reported in all of the Great Lakes except Lake Superior.