A yellow carangoid fish of the Atlantic and Gulf coasts
   (Caranx chrysos), most abundant southward, where it is valued as a food
   fish; -- called also hardtail, horse crevalle, jack, buffalo jack,
   skipjack, yellow mackerel, and sometimes, improperly, horse mackerel.
   Other species of Caranx (as C. fallax) are also sometimes called jurel.