Barbus ida , a new barbel species from the Southern Marmara Sea basin (Teleostei: Cyprinidae)

Abstract

Barbus ida, a new species, is described from the streams G & ouml;nen and Biga, in western Anatolia. It is distinguished from other Barbus species in the adjacent basins by a less thickened last unbranched dorsal-fin ray, serrated along the proximal half of its posterior margin; larger irregular black blotches on the back and the flanks, and small black spots on the head, extending downwards to the cheeks; 56 - 61 total lateral line scales, 11 - 13 scale rows between dorsal-fin origin and lateral line and 7 - 8 scale rows between anal -fin origin and lateral line. Barbus ida also differs from its most closely related species, B. niluferensis , by 8 nucleotide substitution sites in the mtDNA cytochrome oxidase I barcode region.