This slim and sprightly fish is widespread in England and Wales. It favours fast water, where it can be seen in active pursuit of insects and crustaceans, or rising to flies. The body is silvery, with a dark brownish or blue-green back; the lower fins are yellowish or pale pink; the dorsal and anal fins are concave ("Dented Dace", say fishermen, to distinguish it from "Curved Chub"); the anal fin is short, with 7 to 9 rays. It is usually well under the pound, and the largest angled* was 1 lb. 8½ oz.
*up to 1958.