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Tuna are large, fast swimming fish that are highly sought after for their meat. There are several species of tuna including bluefin, yellowfin, bigeye, albacore, and skipjack. Tuna are found in temperate and tropical waters around the world. Here are some key facts about tuna:

  • Tuna can grow quite large, with bluefin tuna capable of reaching 15 feet long and over 1,500 pounds! The largest tuna ever caught was a Pacific bluefin that weighed 1,496 pounds.
  • Tuna are apex predators and eat a variety of fish, crustaceans, and squid. Their diet can vary based on location and species.
  • Tuna undertake impressive migrations crossing entire oceans. For example, Pacific bluefin tuna migrate from their spawning grounds near Japan all the way to the west coast of North America.
  • Tuna are able to maintain their body temperature higher than the surrounding water, allowing them to thrive in colder waters. This is part of why they are so widely distributed.
  • Tuna have very high aerobic capabilities and a unique circulatory system to deliver oxygen throughout their body. Their muscles are dark red because they contain large quantities of oxygen-storing myoglobin.
  • Tuna fisheries employ various techniques to catch tuna including longline, purse seine, pole and line, and trawling methods. Approximately 7 million tons of tuna are caught globally each year.
  • The majority of tuna caught is processed for canned tuna. Canned light meat tuna like skipjack and albacore makes up the bulk of production. Tuna for sashimi makes up a smaller but highly valuable portion of the catch.
  • Several tuna species are overfished and face threats from overharvesting. Organizations like the International Seafood Sustainability Foundation work to promote sustainable tuna fishing practices.

Here is a quick summary of key tuna facts:

Tuna SpeciesMaximum SizeUnique Attributes
Bluefin15 feet, 1,500 poundsHighly migratory, high fat content
Yellowfin6 feet, 450 poundsTropical distribution, bright yellow fins
Albacore5 feet, 250 poundsTemperate oceans, high demand for canned tuna
Bigeye6 feet, 400 poundsDeeper dwelling, large eyes for low light
Skipjack4 feet, 110 poundsFast growing, makes up bulk of canned tuna

Be sure to explore the other in-depth articles on tuna species, fishing techniques, cuisine, and more on Sportfish Hub.

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Steve Momot

Steve is an accomplished professional photographer and marketer who specializes in the Fishing, Yacht, and Boating industry. With a strong presence as an influencer and marketing expert in the Marine Industry, he has made a significant impact in the field. Additionally, Steve is the original creator and co-founder of Sportfishtrader. Prior to his career as a marine photographer, he gained extensive experience as a licensed boat and car dealer in South Florida.

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