Thunnus (subgenus)

Thunnus (Thunnus) is a paraphyletic subgenus of ray-finned bony fishes in the Thunnini, or tuna, tribe. More specifically, Thunnus (Thunnus) is a subgenus of the genus Thunnus, also known as the "true tunas". Thunnus (Thunnus) is sometimes referred to as the bluefin group and comprises five species:

subgenus Thunnus (Thunnus)

• T. alalunga (Bonnaterre, 1788) – albacore
• T. maccoyii (Castelnau, 1872) – southern bluefin tuna
• T. obesus (Lowe, 1839) – bigeye tuna
• T. orientalis (Temminck and Schlegel, 1844) – Pacific bluefin tuna
• T. thynnus (Linnaeus, 1758) – Atlantic bluefin tuna

Thunnus (Thunnus), the bluefin group

tribe Thunnini, tunas Allothunnus, slender tunas A. fallai slender tuna Auxis, frigate tunas A. thazard frigate tuna A. rochei bullet tuna Euthynnus, little tunas E. lineatus black skipjack tuna E. alleteratus little tunny E. affinis mackerel tuna or kawakawa Katsuwonus, skipjack tunas K. pelamis skipjack tuna Thunnus, true tunas T. atlanticus blackfin tuna T. albacares yellowfin tuna T. tonggol longtail tuna or northern bluefin tuna T. obesus bigeye tuna T. maccoyii southern bluefin tuna T. thynnus Atlantic bluefin tuna T. alalunga albacore T. orientalis Pacific bluefin tuna subgenus Neothunnus (yellowfin group) subgenus Thunnus (bluefin group)

Cladogram: The bluefin group of tunas, subgenus Thunnus (Thunnus), within the tribe Thunnini.[1][2]

Thunnus (Thunnus) – the bluefin group of tunas
Common name	Scientific name	Maximum length	Common length	Maximum weight	Maximum age	Trophic level	Source	IUCN status
Albacore	T. alalunga (Bonnaterre, 1788)	1.4 m (4.6 ft)	1.0 m (3.3 ft)	60.3 kg (133 lb)	9–13 yrs	4.31	[3][4]	Least Concern[4]
Southern bluefin tuna	T. maccoyii (Castelnau, 1872)	2.45 m (8.0 ft)	1.6 m (5.2 ft)	260 kg (570 lb)	20–40 yrs	3.93	[5][6]	Endangered[6]
Bigeye tuna	T. obesus (Lowe, 1839)	2.5 m (8.2 ft)	1.8 m (5.9 ft)	210 kg (460 lb)	5–16 yrs	4.49	[7][8]	Vulnerable[8]
Pacific bluefin tuna	T. orientalis (Temminck & Schlegel, 1844)	3.0 m (9.8 ft)	2.0 m (6.6 ft)	450 kg (990 lb)	15–26 yrs	4.21	[9][10]	Near Threatened[10]
Atlantic bluefin tuna	T. thynnus (Linnaeus, 1758)	4.6 m (15 ft)	2.0 m (6.6 ft)	684 kg (1,508 lb)	35–50 yrs	4.43	[11][12]	Least Concern[12]

Thunnus
T. thynnus Atlantic bluefin tuna
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scombriformes
Family:	Scombridae
Genus:	Thunnus
Subgenus:	Thunnus South, 1845
Species
T. alalunga (Bonnaterre, 1788) T. maccoyii (Castelnau, 1872) T. obesus (Lowe, 1839) T. orientalis (Temminck and Schlegel, 1844) T. thynnus (Linnaeus, 1758)