swordfish is also called swordfish and swordfish, belonging to Perciformes, swordfish family and swordfish genus. They are distributed in a wide range, and they are found in almost all sea areas except the Arctic Ocean. But they are mainly distributed in the Pacific Ocean, Atlantic Ocean and Indian Ocean. Swordfish has a streamlined body and looks very smooth on the outside, with a long and sharp maxilla. Adult swordfish will be 2-3 meters long and weigh about 68-113 kg. Swordfish, like tuna, is an edible fish with important commercial value.

Swordfish are warm water migratory species, and they will migrate over the winter in winter. In summer, they will enter the cold sea area for summer. In autumn, it will return to warmer waters. They like to live in the water temperature between 18-22 ℃, but they can also accept the water temperature between 5-10 ℃. Their range of activities is relatively wide, and the depth is generally between 200 and 600 meters, and some are larger than 600 meters. Larger swordfish will survive in the sea area 800 meters deep.

Swordfish are apical at depths of less than 800, and their food includes tuna, loach, flying fish, squid and other cephalopods and crustaceans. They have keen eyesight and strong explosive power, and their ability to prey is very strong.