Bluefin tuna

Pacific bluefin tuna (Thunnus orientalis) is a species of tuna in the scombroid family. They can grow up to 300 centimeters long and weigh up to 450 kilograms. Fusiform body, fat; Caudal stalk thin, flat; Each with a row of small cusp teeth; Gill rake normal; The body is covered by small round scales, the head is scaleless, and the chest scales are large, forming the breastplate; Caudal fin crescent; Dark blue to black back, gray side, silver-white belly; The middle part of adult fish tail stalk is black; First dorsal fin yellow; Dorsal ridges do not extend to the abdomen.
Pacific bluefin tuna is an oceanic surface migratory fish with a seasonal migration habit to the coast. It usually lives in waters with water temperature ranging from 13.5 ℃ to 23℃. It mainly feeds on a variety of fish and squid, crustaceans such as crabs and other submarine invertebrates. Widely distributed throughout the Pacific and most commonly found in the Pacific Northwest as adults.