Squalius kosswigi

Common name. Striped chub.

Diagnosis. Distinguished from other species of Squalius in Western and Central Anatolia by: ● inconspicuous, broad, dark-brown stripe on upper part of flank between head and end of caudal peduncle / ● sharp contrast between dark-brown dorsal part and light-brown lateral and ventral part of body in preserved individuals / ○ snout obtuse / ○ 37–42+2–3 lateral-line scales / ○ scale pockets on flank below lateral stripe with a prominent dark-brown blotch / ○ posterior margin of flank scales usually covered with dark-brown pigments giving it a dusky pattern / ○ no dark-brown spot on scale pockets on back / ○ abdomen between posterior extremity of pelvic base and anus only very slightly compressed / ○ anal rays orange in live, blackish in preserved individuals / ○ anal membranes hyaline / ○ caudal peduncle depth 15–19 % SL. Size up to 158 mm SL.

Distribution . Türkiye: Küçük Menderes, Tahtalı drainages, and four coastal streams west to Azmak (İzmir).

Habitat. Streams with Mediterranean water regime. Can survive in very small pools in dry riverbeds in summer. Also, known from springs and reservoirs.

Biology. Lives up to 6 years. Spawns in March and April.

Conservation status. LC.

Further reading. Özuluğ & Freyhof 2011 (description).