#bluefin_tuna__bluefintuna__bluefin  flesh of very large tuna
  supertype:  #tuna_fish__tuna__tunny  important warm-water fatty fish of the genus Thunnus of the family Scombridae; usually served as steaks
  part of:  #horse_mackerel__horsemackerel__bluefin__bluefin_tuna__bluefintuna__Thunnus_thynnus  largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics

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