ADVANCE FOR USE MONDAY, MAY 26, 2014, AND THEREAFTER- This November 2000 photo taken by John Lyons, fisheries research scientist with the Wisconsin Department of Natural Resources, shows a cicso captured in Big Green Lake in Green Lake, Wis. Scientists in Wisconsin and Minnesota are studying the remaining populations of cisco, a fish that scientists and anglers say leads to bigger musky and walleye. The fish are native to the area and are under threat from climate change. (AP Photo/Courtesy of The Wisconsin Department of Natural Resources, John Lyons)
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