bluefin tuna  is a common name used to refer to several species of tuna of the genus thunnus. {|class="sortable wikitable" |- bgcolor="#ececec" ! species !! common name !! image !! range !! note |- | t. maccoyii || southern&nbsp;bluefin&nbsp;tuna || 100px || found in open southern hemisphere waters of all the world's oceans || |- | t.&nbsp;orientalis || pacific bluefin tuna || 100px || found widely in the northern pacific ocean and locally in the south || formerly known as northern bluefin tuna. |- | t. thynnus || atlantic bluefin tuna || 100px || found in both the western and eastern atlantic ocean, and also in the mediterranean sea || formerly known as northern bluefin tuna, and highly prized as a food fish, leading to overfishing. |- | t. tonggol || longtail tuna || 100px || found in tropical indo-west pacific waters || known as the northern bluefin tuna in australia,as it is found off their northern coast. |} 
Commercial_fish Fish_common_names Thunnus