The Pacific bluefin tuna is a strong swimmer with a body designed for endurance and speed. The lifespan of the huge pelagic species known as the southern bluefin tuna is estimated to be between 20 and 40 years. They are denoted by dots of a corresponding color arranged in rows, in addition to colorless transverse lines. When adults, this portion of their caudal keel is yellow. Their first dorsal fin may be yellow or blue, depending on the species, and their anal fin and finlets have a dingy yellow base with a black edging. These fish have swim bladders, and the underside of their bodies (known as the ventral side) has a silvery white tint. If a southern bluefin tuna is allowed to mature for around 12 years before it is captured, it can reach a length of 2.45 meters and a weight of up to 260 kilograms. The southern bluefin tuna, scientifically known as Thunnus maccoyii, is a very big fish that is often collected by commercial long-liners from Indonesia and Japan in the Indian Ocean, which serves as their breeding habitat. Now, here are the 8 largest tuna species in the world. These tuna species are wonderful, whether eaten or valued for their ecological importance. They’re hard to capture yet vital to the ocean’s ecology. The biggest tuna species are praised for their size, taste, and nutrition. In addition, tuna help balance maritime ecosystems by controlling smaller fish and squid populations. It’s also crucial to the ocean’s environment since sharks and billfish eat it. Tuna is significant for more than size and taste. Sport fishermen also like catching large tuna. However, millions of tons of tuna are fished annually.Ĭommercial fisheries target the biggest tuna species. They swim fast, making them one of the world’s most evasive fish. Tuna migrate millions of kilometers across the ocean. Their delicious flesh and high omega-3 fatty acid content make them popular. Without naming it, we’ll examine the world’s biggest tuna species in this article.įast-swimming tuna may get large. Some tuna species are bigger and more valuable. Many cuisines use tuna because of its taste and nutrients. "The anglers knew this was a huge and special fish and it's not very often you get a big southern bluefin tuna and to see it with a tag was a special and phenomenal moment," he said.Saltwater tuna is eaten worldwide.
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