Marmara barbel

The Marmara barbel (Barbus oligolepis) is a species of cyprinid fish endemic to Turkey where it is only known from fast flowing waters with substrates of stones or pebbles. This species can reach a length of 35 cm SL.

Taxonomic issue
Oliotius oligolepis (Bleeker, 1853), a species of barb from Southeast Asia has at times been placed in the genus Barbus which would render the current species invalid as a junior homonym. However, since Bleeker's oligolepis species, originally in Capoeta, is currently placed in the genus Oliotius and before that in Puntius, Battalgil's oligolepis species is available and valid.