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The ruffe (Gymnocephalus cernuus), a small spiny perch capable of explosive population growth, is one of the latest foreign arrivals threatening the Great Lakes fishery. ... Officials agree that ruffe movement warrants a new approach to deal with this exotic menace. November 15, 1995.
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www.great-lakes.net/envt/flora-fauna/invasive/ruffe.htm...
www.great-lakes.net/envt/flora-fauna/invasive/ruffe.html
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Ruffe - Wikipedia, the free encyclopedia
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The Eurasian Ruffe ( Gymnocephalus cernuus ) is a freshwater fish found in temperate regions of Europe and northern Asia. It has been introduced into the Great Lakes of North America, reportedly w...
en.wikipedia.org/wiki/Ruffe
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DESCRIPTION: Ruffe have a body shape similar to that of perch and coloration and markings are similar to the walleye. They are generally between 15 and 25 cm in total length and their head lacks scales. Ruffe have two large dorsal fins joined together;
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www.anstaskforce.gov/spoc/ruffe.php
www.anstaskforce.gov/spoc/ruffe.php
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Species and Origin: The ruffe is a small European member of the perch family. Ruffe are primarily bottom feeders, preferring dark environments where they can hide from predators. ... Impacts: In Europe, the ruffe is a pest species in waters it has invaded. Ruffe have shown explosive population growth and have had...
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www.dnr.state.mn.us/invasives/aquaticanimals/ruffe/inde...
www.dnr.state.mn.us/invasives/aquaticanimals/ruffe/index.html
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Effects of the Ruffe on other species ... Explosive growth of the ruffe population means less food and space in the ecosystem for other fish with similar diets and feeding habits. Because of this, walleye, perch, and a number of small forage fish species are seriously threatened by continued expansion of the ruffe’s range.
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www.seagrant.umn.edu/ais/ruffe_threat
www.seagrant.umn.edu/ais/ruffe_threat
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The Eurasian ruffe (rhymes with tough) may pose a serious ecological threat to water environments and to sport and commercial fishing. This invader may compete with native fish for food and habitat.
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www.seagrant.umn.edu/ais/ruffe
www.seagrant.umn.edu/ais/ruffe
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Wisconsin Sea Grant's profile of the ruffe ... Common Names: Eurasian ruffe, river ruffe, pope ... The ruffe is a small but aggressive fish native to Eurasia. It was introduced into Lake Superior's Duluth/Superior harbor area in the mid-1980s in the ballast water of an trans-oceanic ship.
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www.seagrant.wisc.edu/greatlakesfish/ruffe.html
www.seagrant.wisc.edu/greatlakesfish/ruffe.html
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Ruffe; Gymnocephalus cernuus ... Common Names: Eurasian ruffe, river ruffe, pope ... The ruffe is a small but aggressive fish native to fresh and brackish waters in portions of Eurasia. It was introduced into Lake Superior's Duluth/Superior harbor area in the mid-1980s in the ballast water of an trans-oceanic ship.
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www.seagrant.wisc.edu/greatlakesfish/fruffe1.html
www.seagrant.wisc.edu/greatlakesfish/fruffe1.html
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