Tuna meat is delicious and only when eaten raw can the original taste be maintained.
Tuna is a member of the family Scombridae of the order Perciformes and is a large-scale pelagic important commodity edible fish. Tuna has a long body shape, thick and round, streamlined, tapering backwards and a slender tail base. The tail fin is forked or crescent-shaped. There are obvious ridges on both sides of the tail peduncle, and there are two ridges on the back and behind the anal fin. A row of small fins, in the shape of a torpedo, slightly rounded in cross-section.
The tuna family is a group of marine fish in the class Teleost, order Scombridae, and family Scombridae. This family includes 15 species of tuna in 5 genera. The size of each species varies greatly. The smallest tuna is the round tuna, with a maximum length of 50 cm and a weight of 1.8 kg.
The largest tuna is the Atlantic bluefin tuna, with a maximum length of 4.6 meters, a weight of 684 kilograms, and an average length of 2 meters. It is believed that its lifespan can be as long as 50 years. Tuna has tapered ends and a medium-sized mouth with well-developed teeth.
The gill membrane is not attached to the isthmus. The scales are cycloidal and usually very small, and the body color is metallic, usually blue or silver. Tuna has dark bands and fins. The dorsal fin consists of 9 to 27 densely arranged fins, and the pelvic fin has 6 fins.
Tuna are species that can maintain their body temperature higher than that of the surrounding water. They are active and agile predators with sleek, streamlined bodies and are among the fastest swimming pelagic fish.
Tuna can be found in warm waters and is a commercially caught fish in large quantities and a popular fish among fishing activities. Some tuna species, such as bluefin tuna, are close to extinction due to human overfishing.
The habitat of tuna
Tuna is a warm-water migratory fish in the ocean. It is found in tropical and subtropical waters around the world, and many species regularly enter cool temperate waters. For the most part, tuna are pelagic (open ocean) fish that live in tropical and subtropical oceans.
Some species migrate seasonally through cool temperate zones or cold waters. Some, especially smaller tuna, remain near the shoreline, while many others roam the deeper waters. Many groups, including yellowfin tuna, tend to stay near the surface and on the continental shelf.