Definitions
1.NounAny member of genus Thunnus of tuna, having blue fins, including:
Atlantic bluefin tuna (Thunnus thynnus), found in both the western and eastern Atlantic Ocean, and alsoin the Mediterranean Sea.
longtail tuna (Thunnus tonggol), found in tropical Indo-West Pacific waters.
Pacific bluefin tuna (Thunnus orientalis), found widely in the northern Pacific Ocean and locally in the south.
southern bluefin tuna (Thunnus maccoyii) of waters of the southern hemisphere.
2.NounAtlantic bluefin tuna (Thunnus thynnus), found in both the western and eastern Atlantic Ocean, and alsoin the Mediterranean Sea.
3.Nounlongtail tuna (Thunnus tonggol), found in tropical Indo-West Pacific waters.
4.NounPacific bluefin tuna (Thunnus orientalis), found widely in the northern Pacific Ocean and locally in the south.
5.Nounsouthern bluefin tuna (Thunnus maccoyii) of waters of the southern hemisphere.