Chub (Squalius cephalus) is a popular fish in out river systems and one that is known as quite wiley! They make an interesting pond fish and can reach good sizes in a pond. They will readily take floating pellets and happily co-inhabit with Koi and carp. Chub can be predatory so will take fish that they can fit into their mouths.
Characteristics of the Chub are the big white rubbery lips, which are often a giveaway to their position in wild rivers.