Maebetaka, the first dorsal fin of swordfish, is a spinnaker, and the fins behind 14 fin are very short, which are contained in the dorsal groove and are not exposed. The second dorsal fin is short and low, located in the tail handle and two gluteal fins. The first gluteal fin is larger and located at the back of the body, and the second buttock is isomorphic to the second dorsal fin. The head and back are blue-purple, and the abdomen is light black with no markings. Each fin is dark blue with silver brilliance.

The first dorsal fin of swordfish is very long and not contained in the dorsal groove, which is the biggest difference in appearance.

Swordfish, or swordfish, is a large predatory fish and the only species of the genus Swordfish in the family Swordfish [1]. Swordfish are distributed in tropical and temperate waters around the world. The total length can exceed 5 meters and the weight can reach 500 kilograms. It is characterized by a long and pointed snout, which accounts for about one third of the total length of the fish. Feeding on squid and fish. Although the swordfish is huge, its swimming speed can reach 100 km per hour, making it one of the fastest fish in the middle reaches of the sea.

Sailfish, also known as marlin, is the general name of many large predatory fish in the sea. Large species can be more than 4 meters long. The snout is slender. Distributed in all major oceans. Feed on other fish.

Swordfish and swordfish are somewhat similar in shape, with a very long upper jaw. The difference is that the upper jaw cross section of swordfish is flat rather than round.

Other characteristics that differ from swordfish are the shape and scales of the body. The cross section of the swordfish body is flat and has thin and pointed scales; Swordfish's body is almost round, and adult fish has no scales.