1.  horse mackerel(n = noun.animal) bluefin, bluefin tuna, thunnus thynnus - largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics;
is a kind of tuna, tunny
has parts: bluefin, bluefin tuna
is a member of genus thunnus, thunnus

2.  horse mackerel(n = noun.animal) saurel, trachurus trachurus - large elongated compressed food fish of the Atlantic waters of Europe;
is a kind of scad

3.  horse mackerel(n = noun.animal) jack mackerel, saurel, spanish mackerel, trachurus symmetricus - a California food fish;
is a kind of scad

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