Dorsum black to purplish-black, posterior part below lateral lines sometimes with black oblique streaks on dark grey background; ventrum dirty white to grey, with scattered darker grey spots; throat with bluish spots and blotches on dark-grey background, appearing marbled.. Head distinctly flatter and less convex (postorbital depth 30.9-35% HL); head length 33.2-34% SL; head width 16.9-19% SL; pelvic fins 2.3-3% of inter-pelvic fin distance (Ref. 44371).