Mackerel (Spanish or Spotted)
numerous thin, wavy vertical bands on body (number of bars increases from as few as 20 in a 40 cm specimen, to as many as 65 in a 150 cm specimen) iridescent blue-grey back silver sides with bluish reflections; juveniles frequently spotted50 cm to 80 cm common fork length, 120 cm maximum fork length (at a maximum weight of about 30 kg)