The Nase is a medium-sized fish with a large body, which is slightly flattened at the sides, and a typical inferior-positioned mouth. Its lips are covered with a horny skin and therefore its mouth has sharp edges. The nase has a grey-blue to grey-green back, silvery sides and belly. All fins except the dorsal fin are red. It usually reaches a length of 40 cm and a weight of 1 kg. It lives gregariously in the middle reaches of rivers and lakes and from these it migrates in shoals upriver to the upper reaches. The nase feeds on algal growths, scraped from stones with their horny lips, leaving characteristic scratch marks on the surface of such submerged stones.
Maximum size and weight: 50 cm, 2.5 kg.
Identifying characteristics: Typical inferior-positioned mouth with sharp edges. Body slightly flattened at sides; sides.