Reference citation: Hölker, F. and C. Hammer. 1994. Growth and food of the ruffe Gymnocephalus cernuus (L.) in the Elbe estuary. Arch. Fish. Mar. Res. 42(1):47-62.
Source citation: Froese, R. and D. Pauly. Editors. 2018. FishBase. World Wide Web electronic publication. www.fishbase.org, version (10/2018).
