Standard length 29.5 in (75 cm); weight 53 lb (24 kg); most are smaller. Base color is olive, bronze, or brownish, with distinct yellow ventral surface. Body compressed and elongate, but with concave dorsal profile of the head just above eyes, protruding lower jaw, and strongly arched nape. Caudal fin is truncate, pelvic fins have elongate filaments. There are 8-11 spines and 11-13 soft rays in the dorsal fin, 3 spines and 7-10 soft rays in the anal fin, and 15-18 pectoral fin soft rays.
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