Gobio insuyanus

Common name. Cihanbeyli gudgeon.

Diagnosis. Distinguished from other species of Gobio in Anatolia by: ○ 39–45 total lateral-line scales / ○ head length 25–30 % SL / ○ chest completely scaled, scales extending forward to or almost to isthmus / ○ 8–10 scales between posterior extremity of pelvic base and anus / ○ scales on belly approximately equal to pupil diameter / ○ 8–9 scale rows between dorsal origin and lateral line / ○ predorsal length 48–52 % SL. Size up to 135 mm SL.

Distribution . Türkiye: Insuyu (Cihanbeyli) drainage in western Lake Tuz basin.

Habitat. Springs and spring-associated streams with slow to moderately fast-flowing waters on sandy and gravelly bottoms, often among very dense aquatic vegetation.

Biology. Lives up to 7 years. Omnivorous, feeding mainly on detritus and macroinvertebrates such as gammarids and dipteran larvae.

Conservation status CR; restricted to one site and in serious decline due to desiccations of its habitat.

Further reading. Ladiges 1960 (description); Naseka et al. 2006 (identification); Johnson et al. 2025 (biology)