Species: Genyatremus scapularis, Peruvian grunt

Genyatremus scapularis (Tschudi, 1845)

Peruvian grunt

Body deep, compressed, back high; head small, blunt, a conspicuous depression before eye; rear margin of bone under eye concealed by scales; mouth small, low, ~horizontal, lips thick;  teeth in bands on jaws, outer ones larger, conical; chin  with 2 pores, with a central groove; preopercle finely serrated, but no enlarged spines; dorsal continuous, but not deeply notched, XII, 14-17; anal III, 12-13, 2nd  spine long and thick;  longest dorsal spine and 2nd  anal spine  ½ head length;  anterior rays of dorsal and anal fin much taller than posterior rays, giving these fins a somewhat triangular outline; pectoral fins relatively short, not reaching anal origin; tail forked; scales small, in oblique rows above, horizontal rows below; scales over entire body and head except front of snout, lips and chin; soft dorsal and anal without scales; lines of scales above lateral line in rows oblique to that line.