(European) Chub Squalius cephalus /(Leuciscus cephalus)

If you find a carp-looking large fish with dark tail and without the extended dorsal fin or you find a torpedo-shaped, barbel-looking fish without any barbels, you're probably looking at a Chub. The Chub, called the European or Common Chub when needed to distinguish from other species of Chub, is a member of the carp family native to slow rivers, canals and still water in northern Eurasia.

It grows to some 30-60cm. As if it isn't already difficult to separate Roach and Rudd, the Chub will hybdrise with both of these. In continental Europe, the (Common) Nase can also look similar, as can southern European chubs.