Ruffe

Species of fish Ruffe Ruffe in Pärnu River (Estonia) Conservation status Least Concern (IUCN 3.1) Scientific classification Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Division: Teleostei Order: Perciformes Family: Percidae Genus: Gymnocephalus Species: G. cernua Binomial name Gymnocephalus cernua(Linnaeus, 1758) Synonyms Perca cernuus Linnaeus, 1758 Acerina cernua (Linnaeus, 1758) Holocentrus post Lacépède, 1802 Cernua fluviatilis J. Fleming, 1828 Acerina vulgaris G. Cuvier, 1829 Acerina fischeri Eichwald, 1873 Acerina czekanowskii Dybowski, 1874 Acerina cernua danubica Vladykov, 1931 (ambiguous) Acerina cernua essipovi Burmakin, 1941 The ruffe (Gymnocephalus cernua), also known as the Eurasian ruffe or pope, is a freshwater fish found in temperate regions of Europe and northern Asia. It has been introduced into the Great Lakes of North America as an invasive species and is causing unfortunate results as it is reproducing faster than other species. Its common names are ambiguous – "ruffe" may refer to any local member of its genus Gymnocephalus, which as a whole is native to Eurasia. Description The colours and markings are similar to those of the walleye, an oli