Maximum size 98 in (250 cm) fork length and 79-99 lb (36-45 kg), commonly to 28 in (70 cm). Body elongate, strongly compressed. Snout much shorter than rest of head. Posterior portion of maxilla exposed, reaching to a vertical with hind margin of eye. Gill rakers on first arch few, 6-11, usually 8-10. Two dorsal fins, scarcely separated, the first with 14-16 spines. Eight or nine dorsal finlets; 9 or 10 anal finlets. Lateral line abruptly curving downward below second dorsal fin. Body completely covered with small scales; no anterior corselet developed. Vertebrae, 41-43. Back iridescent bluish green, sides silvery, adults do not have bars or spots, but juveniles may have spots on sides. Unlike many other species of Spanish mackerels, adults have no black area in the first dorsal fin.
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