New Record of Alburnoides kosswigi (Pisces: Leuciscidae) in the Ilg？n Lake Basin

Alburnoides kosswigi was described from the Sakarya River. Morphological data reveal that it also inhabits in the stream Beykonak, a tributary of the Ilg？n Lake in Central Anatolia. The Ilg？n population of Alburnoides kosswigi has distinguished features such as a scaleless keel between the posterior pelvic-fin base and the anus, the eye diameter approximately equal to the snout length and the interorbital distance, 42–47 total lateral-line scales, 11？–13？ branched anal-fin rays, 38–39 total vertebrae, 11-12 predorsal vertebrae, and 7–8 gill rakers