Gymnocephalus cernuus

Species recognized by United Kingdom Species List, South Atlantic Species List, Gulf of Bothnia Species List, North Sea Species List, Irish Sea Species List, Gulf of Finland Species List, Black Sea Species List, The Netherlands Species List, South Africa Species List, Sweden Species List, Switzerland Species List, Poland Species List, Romania Species List, Luxembourg Species List, France Species List, Finland Species List, Estonia Species List, Germany Species List, Belarus Species List, Belgium Species List, Czech Republic Species List, Bay of Biscay Species List, Austria Species List, Denmark Species List, Norway Species List, Barcode of Life Data Systems, Canada Species List, and Russia Species List

Recognized by Flickr BHL, iNaturalist, and Arctic Freshwater Fishes

Recognized by OBIS environmental data records