Salmo sp. Common name. Marmara trout. Diagnosis. Distinguished from other species of Salmo in Marmara and Black Sea basins by: ○ caudal peduncle depth in male 8–10 % SL / ○ size of adipose equal in male and female / ○ numerous black spots on back and flank in adult female / ○ red spots present on the body in individuals larger than 200 mm SL / ○ number of red spots does not increase with increasing size in male / ● 109–121 lateral-line scales counted until end of hypural complex size up to 287 mm SL. Distribution. Türkiye: Ayazma, a headwater stream in Karamenderes drainage and upper tributaries of Gönen on Biga Peninsula. Habitat. Headwater streams with cold, clear water, moderate current, gravelly and pebbly bottom. Biology. No data. Conservation status. NE. Remarks. This species was described as S. duhani in 2021, but the name is a nomen nudum and is not valid from the description. We suspect that it will be redescribed soon. Further reading. Turan & Bayçelebi 2020 (record as S. pelagonicus); Turan & Aksu 2021 (invalid description as S. duhani).

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