It is a common fish in tropical and subtropical oceans in the world. It is named after its upper jaw extends forward like a sword. 1967 a "speed comparison table of animals in the sea" published by the Soviet journal nature shows that swordfish has the fastest swimming speed, reaching 130 km per hour.
Swordfish has a typical streamlined body with a smooth surface, a long and sharp upper jaw, a small fin on the back, a flat mouth and no gills and ventral fins. Swordfish have different colors. Generally, the back and body of the fish are brown and black.
The average weight of swordfish is 68- 1 13kg, and the average body length is 2. 1m, accounting for 1/3 of its body length. The main food of swordfish is other fish and squid. Swordfish is distributed in all oceans except the Arctic Ocean, and it is also a major food fish with important fishery value.
When swordfish swims forward, the powerful tail handle can produce great impetus, and the jaw like a spear plays the role of splitting water. Swordfish moves at a high speed of 130 km per hour, and its hard upper jaw can pierce the thick layer of the bottom of the ship. In the London Museum, there is a wooden boat with a thickness of 50 cm pierced by the swordfish "long sword".
Sailfish, also known as banana fish.
It is a migratory fish with a slightly flat, streamlined and muscular appearance. The largest swordfish can reach several meters long and weigh hundreds of kilograms, making it one of the fastest fish in the ocean. Sailfish meat is tender and plump, and its muscles have different colors, such as white, reddish and bright red. It has high nutritional value and is a high-grade fish ingredient.
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Generally, the body length is 200~300 cm, the longest is 348 cm, and the weight is above 90 kg (200 lbs), and the weight can reach 100 kg. Swordfish is cylindrical and slightly flat; The dorsal and ventral edges are obtuse and relatively straight. The tip of the kiss is very long and gun-shaped. Small eyes, lying on your side. The interval between the eyes is wide and flat.
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Nutritional value of swordfish;
The contents of protein, docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), calcium, magnesium and vitamin D in swordfish are extremely rich, and the content of fish oil is also very high. Sailfish is white and stringy, with delicious meat and high nutritional value. Suitable for first-class sashimi, fried food and refined products.
The benefits of eating swordfish:
Eating fish makes people smart. Fish is rich in DHA, which mainly exists in brain, retina and nerve. DHA can not only maintain the normal function of human retina, but also benefit the development of human intelligent system. Therefore, eating more fish will make people smarter.
Eating fish contributes to human development. Fish is rich in protein, and the content of protein in every 500g of fish is equivalent to the content of protein in 600g of eggs or 850g of pork. Rich protein is the carrier of human life, which has the functions of balancing nutrition, regulating water balance in the body and improving immunity, and can effectively help the growth and development of infants, children and adolescents. This is one of the reasons why we eat fish when we are sick or have a wound, because fish can also help the wound to recover and heal.
References:
Sailfish-Baidu Encyclopedia