Tuna can be eaten raw.

Because tuna is a deep-sea fish, deep-sea fish do not usually carry parasites in their bodies.

Introduction of tuna

The tuna family (scientific name: Thunnini): is a family of marine fishes under the order Scleractinia, order Scombridae, family Scombridae. The family contains 5 genera and 15 species of tuna, the size of each species varies greatly, the smallest tuna is the round rudder skipjack tuna, whose maximum length is 50 cm and weight is 1.8 kg; the largest tuna is the Atlantic bluefin tuna, whose maximum length is 4.6 meters and weight is 684 kg.

The average length is 2 meters and it is believed that it can live up to 50 years. The tuna is tapered at both ends and has a moderate mouth with well-developed teeth. The gill membranes are not attached to the pharyngeal isthmus. The scales are pendulum-shaped and usually small, and the body color is metallic, usually blue and silver. Tuna have dark bands and fins. The dorsal fin consists of 9 to 27 densely arranged fins, and the ventral fin has 6 fins.

Tuna are species that can maintain their body temperature at a higher temperature than the surrounding water. They are some of the most active and agile predators with smooth, streamlined bodies and are among the fastest swimming pelagic fish. Tuna can be found in warmer waters, making it a heavily commercially fished fish and a popular fish for fishing activities.

Reference: Baidu Encyclopedia -- Tuna