This species is distinguished from O. anatolicus and all other species of the O. angorae group by the following: with a series of dark-brown midlateral blotches usually fused into a wide, irregular shaped midlateral stripe, rarely a mottled pattern (vs. a mottled or marbled pattern or a series of midlateral blotches or short bars not forming a stripe), and with a depigmented stripe along the anterior part of the lateral line (vs. absent or very poorly expressed); differs further from O. anatolicus by having pre-dorsal back with a mottled or marbled pattern, rarely with distinct saddles (vs. pre-dorsal back usually with 3-4 large saddles, wider than interspace), and caudal peduncle depth 1.5-1.8 times in its length (vs. 1.3-1.6) (Ref. 131061).