 Two particularly rich genera are "Alosa" with 18 endemic species/subspecies and "Benthophilus" with 16 endemic species.Other examples of endemics are four species of "Clupeonella", "Gobio volgensis", two "Rutilus", three "Sabanejewia", "Stenodus leucichthys", two "Salmo", two "Mesogobius" and three "Neogobius".Most non-endemic natives are either shared with the Black Sea basin or widespread Palearctic species such as crucian carp, Prussian carp, common carp, common bream, common bleak, asp, white bream, sunbleak, common dace, common roach, common rudd, European chub, sichel, tench, European weatherfish, wels catfish, northern pike, burbot, European perch and zander.