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A tuna (pl.: tunas or tuna) is a saltwater fish that belongs to the tribe Thunnini, a subgrouping of the Scombridae family.The Thunnini comprise 17 species across five genera, [2] the sizes of which vary greatly, ranging from the bullet tuna (max length: 50 cm or 1.6 ft, weight: 1.8 kg or 4 lb) up to the Atlantic bluefin tuna (max length: 4.6 m or 15 ft, weight: 684 kg or 1,508 lb), which ...
The southern bluefin tuna (Thunnus maccoyii) is a tuna of the family Scombridae found in open southern Hemisphere waters of all the world's oceans mainly between 30°S and 50°S, to nearly 60°S. At up to 2.5 metres (8 ft 2 in) and weighing up to 260 kilograms (570 lb), it is among the larger bony fishes.
Description. The yellowfin tuna is among the larger tuna species, reaching weights over 180 kg (400 lb), but is significantly smaller than the Atlantic and Pacific bluefin tunas, which can reach over 450 kg (990 lb), and slightly smaller than the bigeye tuna and the southern bluefin tuna. The second dorsal fin and the anal fin, as well as the ...
In recent years ICCAT adopted a draconic recovery plan for Atlantic bluefin tuna in the eastern portion of their range, which led to the reduction of the total allowable catches from 27,500 in 2007 to 13,400 tons in 2014. Apart from reduced total allowable catches, the recovery plan also introduced strict monitoring, reporting, and control ...
Tuna penning. Tuna penning is a practice used in marine aquaculture, in which smaller tuna are caught off shore and moved back to large, in-water enclosures. The pens are typically located in the relatively shallow waters of sheltered areas, such as bays or coves. [1] Tuna penning is primarily used for Atlantic Bluefin Tuna (ABT), a highly ...
The Atlantic bluefin tuna is a close relative of one of the other two bluefin tuna species, the Pacific bluefin tuna. The southern bluefin tuna, on the other hand, is more closely related to other tuna species such as yellowfin tuna and bigeye tuna, and the similarities between the southern and northern species are due to convergent evolution. [3]
The Pacific bluefin tuna is primarily found in the North Pacific, ranging from the East Asian coast to the western coast of North America. [3][6] It is mainly a pelagic species found in temperate oceans, but it also ranges into the tropics and more coastal regions. [3] It typically occurs from the surface to 200 m (660 ft), [6] but has been ...
Thunnus tonggol is a species of tuna of tropical Indo-West Pacific waters.. It is commonly known as the longtail tuna [1] or northern bluefin tuna. [4] [5] The usage of the latter name, mainly in Australia to distinguish it from the southern bluefin tuna, leads to easy confusion with Thunnus thynnus of the Atlantic and Thunnus orientalis of the North Pacific.