Tuna - Best Method - Trolling

Tuna
Yellowfin tuna, Thunnus albacares
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Subclass: Neopterygii
Infraclass: Teleostei
Order: Perciformes
Family: Scombridae
Genus: Thunnus
South, 1845

Tuna is a salt water fish from the family Scombridae, mostly in the genus Thunnus. Tuna are fast swimmers, and some species are capable of speeds of 70Â km/h (43Â mph). Unlike most fish, which have white flesh, the muscle tissue of tuna ranges from pink to dark red. The red coloration derives from myoglobin, an oxygen-binding molecule, which tuna express in quantities far higher than most other fish. Some larger tuna species, such as bluefin tuna, display some warm-blooded adaptations, and can raise their body temperatures above water temperatures by means of muscular activity. This enables them to survive in cooler waters and to inhabit a wider range of ocean environments than other types of fish.

Etymology

"Tuna" is akin to the Spanish word atún, from Latin thunnus / Greek θύννος, thynnos.

Taxonomy

Tuna all sizes Pengo

Maximum reported sizes of tuna species

There are over fifty different "tuna" species, the "tuna" designation often varying in accordance with local custom. The Thunnus genus has been attributed to the species:

  • Albacore, Thunnus alalunga (Bonnaterre, 1788).
  • Yellowfin tuna, Thunnus albacares (Bonnaterre, 1788).
  • Blackfin tuna, Thunnus atlanticus (Lesson, 1831).
  • Southern bluefin tuna, Thunnus maccoyii (Castelnau, 1872).
  • Bigeye tuna, Thunnus obesus (Lowe, 1839).
  • Pacific bluefin tuna, Thunnus orientalis (Temminck & Schlegel, 1844).
  • Northern bluefin tuna, Thunnus thynnus (Linnaeus, 1758).
  • Longtail tuna, Thunnus tonggol (Bleeker, 1851).

Species of several other genera (all in the family Scombridae) have common names containing "tuna":

  • Slender tuna Allothunnus fallai (Serventy, 1948)
  • Bullet tuna Auxis rochei (Risso, 1810)
  • Terriowipet tuna Auxis tongolis (Bonnaterre, 1788).
  • Frigate tuna Auxis thazard (Lacepede, 1800)
  • Kawakawa (little tuna or mackerel tuna) Euthynnus affinis (Cantor, 1849)
  • Little tunny (little tuna) Euthynnus alletteratus (Rafinesque, 1810)
  • Black skipjack tuna Euthynnus lineatus (Kishinouye, 1920)
  • Dogtooth tuna Gymnosarda unicolor (RÃppell, 1836)
  • Skipjack tuna Katsuwonus pelamis (Linnaeus, 1758)
  • Lineside Tuna, Thunnus lineaus (Temminck & Schlegel, 1844).

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