horse mackerel

(noun) largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics. Synonyms: bluefin, bluefin tuna, Thunnus thynnus.

(noun) large elongated compressed food fish of the Atlantic waters of Europe. Synonyms: saurel, Trachurus trachurus.

(noun) a California food fish. Synonyms: jack mackerel, Spanish mackerel, saurel, Trachurus symmetricus.