Published November 12, 2025 | Version v1

Oxynoemacheilus seyhanensis

Description

Oxynoemacheilus seyhanensis

Common name. Lycaonian loach.

Diagnosis. Distinguished from other species of Oxynoemacheilus in Marmara and Black Sea basin as well as in Cilicia and northern Levant by: ● caudal slightly emarginate, almost truncate / ○ lateral line complete / ○ flank behind dorsal base covered by scales / ○ suborbital groove absent in male / ○ no prominent dorsal crest on caudal peduncle. Size up to 84 mm SL.

Distribution. Türkiye: Kızılırmak and Yeşilırmak drainages, also in upper and middle Seyhan, and in Çerkeş, in upper Filyos drainage. Recorded from Sultan marshes, where it entered through Zamantı tunnel.

Habitat. Moderately fast-flowing water in streams with gravel or mud substrate.

Biology. No data.

Conservation status. LC.

Remarks. Oxynoemacheilus kosswigi is a synonym.

Further reading. Bănărescu 1968 (description); Erk’akan & Kuru 1986 (description as O. kosswigi); Sungur 2020 (synonyms).

Notes

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 531, DOI: 10.1515/9783111677811, http://zenodo.org/record/17881367

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Additional details

References

  • Banarescu, P. M. 1968. Susswasserfische der Turkei. Erganzende Angaben zu Teil 2: Cobitidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut 65: 353-356, Pl. 3.
  • Erk'akan, F. & M. Kuru. 1986. A new noemacheilinae loach subspecies from the Lake Van basin, Turkey (Osteichthyes, Cobitidae). Doga Turk Biyoloji Dergisi 10: 160-162.
  • Sungur, S. 2020. Oxynoemacheilus kosswigi a junior synonym of O. seyhanensis (Teleostei: Nemacheilidae). Iranian Journal of Sciences and Technology, Transactions A: Science 44: 563-573. https://doi.org/10.1007/s40995-020-00857-9