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Yellowfin tuna (Thunnus albacares) Yellowfin tuna is among the larger tuna species, reaching lengths of two meters, although the common size ranges 40–170 cm. It is an open‑water and oceanic species found worldwide in the tropical and subtropical waters of the Pacific, Atlantic, and Indian…

Tropical tuna species Tuna species that inhabit warm‑temperate tropical and subtropical waters, with temperatures generally greater than 18°C, (although they can dive in colder waters). This group includes skipjack, yellowfin, and bigeye tuna.

Temperate tuna species Tuna species that inhabit cold‑temperate waters around 10°C, although they can also be found in warmer waters of the subtropical regions. This group includes the three species of bluefin tuna (Atlantic bluefin, Pacific bluefin, and Southern bluefin) and albacore tuna.

Skipjack tuna (Katsuwonus pelamis) The smallest of the commercial tuna species, it usually does not reach one meter length (40–80 m). Skipjack is highly migratory and is found throughout the Pacific, Atlantic and Indian Oceans between 55–60°N and 45–50°S, although the greatest abundance is registered…

Southern bluefin tuna (Thunnus maccoyii) Previously considered a subspecies of the Pacific bluefin or Atlantic bluefin, the Southern bluefin tuna also reaches large sizes, and adults are commonly found at around 180 cm in length. Southern bluefin occurs throughout the Atlantic, Pacific, and Indian Oceans,…

Pacific bluefin tuna (Thunnus orientalis) The Pacific bluefin is one of the largest of the tuna species (80–200 cm length), although it is generally smaller than the Atlantic bluefin tuna, with which it is closely related. Of the tunas, Pacific bluefin has the largest geographic…

Bluefin tuna (Thunnus spp.) Bluefin tuna is the common name used to refer the group comprised of three different temperate water species of the genus Thunnus (T. thynnus, T. orientalis and T. maccoyii), representing the largest of the tuna specimens. Bluefin tuna has the widest…

Bigeye tuna (Thunnus obesus) One of the main tuna species found in warm temperate waters of the Atlantic (but not in the Mediterranean), Pacific and Indian Oceans, with lengths ranging 40–180 cm. Its geographical distribution covers from 55–60°N and 45–50°S. Juveniles are seen in the…

Albacore tuna (Thunnus alalunga) One of the smaller major tuna species (40–100 cm length), generally bigger than skipjack, but smaller than yellowfin tuna. Albacore tuna is a temperate species widely distributed in temperate and tropical waters throughout all oceans and the Mediterranean Sea. It ranges…

Northern Atlantic bluefin tuna (Thunnus thynnus) The largest of the tuna species that can reach three meters in length, although the common size ranges 80–200 cm. The Atlantic bluefin tuna occurs in subtropical and temperate waters and has a wide geographical distribution from the North…