Thunnus alalunga
Thunnus albacares
Thunnus atlanticus
Thunnus maccoyii
Thunnus obesus
Thunnus orientalis
Thunnus thynnus
Thunnus tonggol

Tuna come many species of ocean-dwelling fish in the family Scombridae, mostly in the genus Thunnus. Tuna come convenient swimmers and include many coinage that come warm-blooded. Unlike virtually all ocean fish coinage, which keep close at hand whiten flesh, a flesh of tuna is pink. This is because a tuna's blood has the higher o carrying ability than more fish mintage. A select few of a big tuna mintage like the bluefin tuna can raise their blood temperature above the a river temperature by using muscular activity. This enables the children to sleep in cooler waters & last the wider range of circumstances.

Tuna occurs as popular seafood. Occasionally varieties of tuna, like a bluefin, are endangered due to overfishing, while others come area of swell maintained piscary, like a bigeye or yellowfin.

Mercury levels are typically comparatively high inside tuna, due to their higher position in the food chain and the subsequent accumulation of heavy metals from their diet. Following, inside March 2004 a United States FDA issued guidelines recommending pregnant women, nursing mothers & tykes to restrict their intake of tuna & more types of predatory fish [http://www.cfsan.fda.gov/~dms/admehg3.html].

These are hard to keep tunthe within a captive environment; Monterey Bay Aquarium is one of the couple of marine museum around the globe that with success keep tuna in display.

Types include: Bluefin tuna, which can develop to 1,500 pound (680 kilogram) Yellowfin tuna Albacore tuna Bigeye tuna Blackfin tuna

Tunthe come a most common target for big-game fishing, and come mostly caught in unreal lures.

Other species

Mintage of many more genera (dead Scombridae) come ordinarily known as "tuna": Skipjack tuna Katsuwonus pelamis Slender tuna Allothunnus fallai Bullet tuna Auxis rochei rochei Frigate tuna Auxis thazard thazard Kawakawa (little tuna or mackerel tuna) Euthynnus affinis Little tunny (little tuna) Euthynnus alletteratus Butterfly kingfish (Butterfly tuna) Gasterochisma melampus Dogtooth tuna Gymnosarda unicolor