This species is distinguished from other species of O. angorae group by a combination of characters, none unique: decreasing body depth between the dorsal- and caudal-fin bases; depth of the caudal peduncle is 79-87% of the body depth at the anterior-most dorsal fin base; caudal peduncle depth 1.3-1.5 times in its length; head long, its length 24-26% SL; prepelvic length 52-56% SL; belly with small, isolated and embedded scales, usually reaching from between the pelvic fin bases to the midline between the pectoral- and pelvic-fin origins; caudal fin emarginate with middle caudal-fin ray 71-84% of the length of the longest caudal-fin ray; flank with irregularly shaped and set blotches on the flank, forming a mottled or marbled pattern; no depigmented stripe along the anterior part of the lateral line (Ref. 131061).