Horse Mackerel

horse mackerel has quite a slender, quite compressed body with a large head in which the rear of the upper jaw reaches the front of the eye and the lower jaw projects beyond the upper jaw. The eye has a well developed adipose eyelid.^[4] It has two dorsal fins,^[5] the first is tall^[3] and has seven thin spines, with the final spine being much shorter than the others. The second dorsal fin is separated from the first by a narrow gap and is considerably longer than the first^[5] with 29-33 soft rays.^[6] The anal fin is about as long as the second dorsal fin and there are two separate spines at its anterior end.^[5] The moderately sized pelvic fin has a single spine and five soft rays and has its origin below the end of the pectoral fin base.