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Jensen, D.A., M. McLean, D.H. Ogle, and J.L. Gunderson, 1996. Ruffe: A New Threat to our Fisheries, Minnesota and Ohio Sea Grant Programs, Duluth, MN Fact Sheet 64
(1996): 4 Pages A fact sheet produced by the Ohio Sea Grant College Program Ruffe: A New Threat to our FisheriesThe ruffe (pronounced ruff), is a small but aggressive fish species native to Eurasia. It was introduced into Lake Superior in the mid-1980s in the ballast water of an ocean-going vessel. Because the ruffe matures quickly, has a high reproductive capacity, and adapts to a wide variety of environments, it is considered a serious threat to commercial and sport fishing. It also has the potential to seriously disrupt the delicate predator/prey balance vital to sustaining a healthy fishery.
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