Thunnus (subgenus)
Thunnus is a 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 sometimes referred to as the bluefin group, and comprises five species:
;subgenus Thunnus
