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  2. Tuna - Wikipedia

    en.wikipedia.org/wiki/Tuna

    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 15 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 [citation ...

  3. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    Marine ecosystems can be divided into many zones depending upon water depth and shoreline features. The oceanic zone is the vast open part of the ocean where animals such as whales, sharks, and tuna live. The benthic zone consists of substrates below water where many

  4. Pacific bluefin tuna - Wikipedia

    en.wikipedia.org/wiki/Pacific_bluefin_tuna

    Japan is both the biggest consumer and the leader in tuna farming research. [17] [18] Kinki University of Japan first successfully farmed already-hatched bluefin tuna in 1979. In 2002, they succeeded in breeding them, and in 2007, the process was repeated for a third generation. [19] [20] [21] This farm-raised tuna is now known as Kindai tuna ...

  5. Southern bluefin tuna - Wikipedia

    en.wikipedia.org/wiki/Southern_bluefin_tuna

    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 .

  6. Atlantic bluefin tuna - Wikipedia

    en.wikipedia.org/wiki/Atlantic_bluefin_tuna

    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.

  7. Yellowfin tuna - Wikipedia

    en.wikipedia.org/wiki/Yellowfin_tuna

    Sonic tracking has found that although yellowfin tuna, unlike the related bigeye tuna, mostly range in the top 100 m (330 ft) of the water column, [6] another study reported that depth tends to vary with time of day: 90% of their recorded depth values were shallower than 88 m (289 ft) during the night, and shallower than 190 m (620 ft) during ...

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  9. Little tunny - Wikipedia

    en.wikipedia.org/wiki/Little_tunny

    The typical diet is very similar to that of the king mackerel because the fish are of a similar size and live in the same area of the water column. [16] The little tunny is an opportunistic predator, feeding on crustaceans, clupeid fishes, squids, and tunicates. Its diet also responds to seasonal changes in food availability.