Petroleuciscus smyrnaeus Common name. Smyrna chub. Diagnosis. Distinguished from other species of Petroleuciscus in West Asia by: ○ 7½ branched dorsal rays / ○ usually 8½ branched anal rays / ○ iris whitish / ○ 6 scales between lateral line and dorsal origin / ○ 32–35 total lateral line scales / ○ posterior margin of anal straight or slightly concave / ○ black pigments along free margin of each flank scale/ ○ pigments absent or very few orange pigments on anal rays in life / ○ body depth at dorsal origin 24–27 % SL / ○ head width at posterior eye margin 14–16 % SL / ○ eye diameter approximately equal to snout length. Size up to 100 mm SL. Distribution. Türkiye: Bakırçay to Gediz drainages. Also, on Lesbos Island (Greece). Habitat. Slow-flowing to standing water of rivers, reservoirs, and larger streams, often associated with aquatic vegetation. Biology. No data. Remarks. Ladigesocypris mermere from Lake Marmara in Gediz drainage is a synonym. Conservation status. LC. Further reading. Bogutskaya 1996 (description); Bogutskaya 2002 (systematics); Stoumboudi et al. 2006 (Lesbos); Kottelat & Freyhof 2007 (biology, distribution); Turan et al. 2018d (diagnosis); İlhan et al. 2020 (distribution).

Published as part of Freyhof, Jörg, Yoğurtçuoğlu, Baran, Jouladeh-Roudbar, Arash & Kaya, Cüneyt, 2025, Handbook of Freshwater Fishes of West Asia, GmbH, Berlin / Boston :De Gruyter on page 356, DOI: 10.1515/9783111677811, http://zenodo.org/record/17881367