Also known as Eurasian Ruffe, Pope.
Found over soft bottoms with deposits of gravel and sand in slow moving waters of canals, estuaries, brackish lakes and large rivers.
They feed on fish and zooplankton.
Length - 25cm
Depth - 10-?m
Widespread Arctic Ocean, Asia, Europe
A very invasive fish which has caused substantial ecological damage. (See our blog on invasive fish)
A popular game fish these fish display some of the most beautiful colours. Ref: http://www.fishbase.se/summary/Gymnocephalus-cernua