Gudgeon

Gudgeon (Gobio), a European genus of small carp-like fishes, from clear rivers with gravelly bottom. The scales are of moderate size; the spineless dorsal is short. There is a barbel at the angle of the mouth, and the pharyngeal teeth are in two rows. G.fiuviatilis, the common Gudgeon, about 8 inches long, olive-brown, spotted with black above, white below, is British. The only other species, G. uranoscopus, is found in the Danube and Dnieper, and their affluents, Ladislavia and Pseudogobio from Eastern Asia, are closely allied.