The schraetzer (Gymnocephalus schraetser) or striped ruffe, is a species of perch native to the Danube basin. It is a schooling fish, being found over muddy or sandy bottoms of moderately flowing large rivers. This species can reach a length of 30 centimetres (12 in) TL though most only grow to 15 centimetres (5.9 in). The greatest recorded weight for this species is 250 grams (8.8 oz). While of no interest to commercial fisheries, it is popular as a game fish and is also frequently used as bait in pursuit of other species.[2]

Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Percidae
Genus: Gymnocephalus
G. schraetser
Binomial name
Gymnocephalus schraetser
  • Perca schraetser Linnaeus, 1758
  • Acerina schraetser (Linnaeus, 1758)
  • Schraitser ratisbonensium J. C. Schaeffer, 1761
  • Perca danubiensis Gronow, 1854


  1. ^ Freyhof, J. & Kottelat, M. (2008). "Gymnocephalus schraetser". IUCN Red List of Threatened Species. 2008: e.T9565A13001707. doi:10.2305/IUCN.UK.2008.RLTS.T9565A13001707.en. Retrieved 13 September 2020.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2014). "Gymnocephalus schraetser" in FishBase. April 2014 version.