The bigeye tuna is a species of true tuna of the genus Thunnus, belonging to the wider mackerel family Scombridae. Bigeye tuna are found in the open waters of all tropical and temperate oceans, but no

Thunnus is a paraphyletic subgenus of ray-finned bony fishes in the Thunnini, or tuna, tribe. More specifically, Thunnus is a subgenus of the genus Thunnus, also known as the "true tunas". Thunnus is