Agkistrodon halys, also known as toothfish, belongs to Salmonidae and is a small, warm and representative deep-sea luminous fish. Its body is slender and flat, generally less than 350 mm in length. Big head, big eyes and short kiss. The mouth is big and oblique. The mandible with short beard is larger than the maxilla. Long and prominent fangs are very beneficial. The dorsal fin is located at the back and upper part of the pectoral fin, and the longer first fin is filiform. There are luminous devices on the side, back, chest, abdomen and tail. It is the general name of the marine fishes of Shore (Salmoniformes, Shore Fish Family). ***6 species, mainly distributed in tropical areas of various oceans. . They are all deep-sea species, with luminous bodies on both sides, and some also have luminous bodies at the ends of fins and mouths. The light emitted is sometimes used to lure other fish to eat. Fish is named for its huge teeth and protruding from both palates like an adder. Small in size, the largest is C. macouni in the Pacific Ocean, with a body length of 30 cm (1 ft). Agkistrodon halys is one of the fierce carnivores in the deep ocean, belonging to Actinidia, Megadonta, Megadonta and Myxodonta. Like the black giant mouth fish introduced earlier, it has a big mouth and long fangs. Their teeth are too long to put in their mouths, and their lower teeth bend back and almost touch their eyes. Scientists believe that their hunting method is to swim quickly to their prey and then nail it to their teeth. The first vertebra in the back of their head actually acts as a shock absorber. This terrible animal has a slender back bone with a light-emitting device at the top, and then teases its prey in the way of their close relative, the black giant mouth fish. They were seen standing motionless in the water, shaking the bait overhead to attract delicious food. They also have light-emitting devices on the side of their bodies. These light-emitting devices are not used as bait, but mainly used to signal during mating. To attract other poisonous snakes. The viper has a hinged skull, and its lower jaw can be widened to swallow large prey. The stomach is very elastic like rubber, so it can swallow prey as big as itself, and their stomachs can also be used as storage. If there is a lot of food, swallow more and store it in your stomach. The viper is a fish that migrates vertically day and night. During the day, it stays at a depth of 5,000 feet (1.524 meters) and feeds in waters less than 2,000 feet (about 609 meters) at night. Agkistrodon halys is non-toxic, distributed in the East China Sea and South China Sea of China, and widely distributed in tropical to temperate waters of Japan and the Pacific Ocean, Indian Ocean and Atlantic Ocean. The viper is dressed so beautifully in the deep sea, the fundamental purpose is to fully lure its prey and then hunt it ferociously. Because the viper's mouth can be opened to twice the normal size, and its stomach is very elastic and can swallow its own prey. Agkistrodon halys is a representative deep-sea fish, distributed in tropical to temperate waters all over the world. Its teeth are long and protruding, like those of a poisonous snake. There are many light-emitting devices on the body to lure hunters and prey. The mouth is wide open, the stomach is as elastic as rubber, and it can swallow prey the same size as itself. Chase plankton, go near the sea at night and move into the deep sea during the day. The first vertebra in the back of their head actually acts as a shock absorber. This terrible animal has a slender back bone with a light-emitting device at the top, and then teases its prey in the way of their close relative, the black giant mouth fish. They were seen standing motionless in the water, shaking the bait overhead to attract delicious food. They also have light-emitting devices on the side of their bodies. These light-emitting devices are not used as bait, but mainly used to signal during mating. To attract other poisonous snakes. The viper has a hinged skull, and its lower jaw can be widened to swallow large prey. The stomach is very elastic like rubber, so it can swallow prey as big as itself, and their stomachs can also be used as storage. If there is a lot of food, swallow more and store it in your stomach. People usually think that fish living in the deep sea will be strange, and the viper is one of the strangest deep-sea fish. This grotesque fish has so big teeth that it can't fit in its mouth, but it can only show its teeth, showing a very terrible appearance. It swims very fast, can rush to its prey quickly and bite it firmly with its teeth, which are deeply inserted into the body like nails. How's it going? Isn't this kind of fish cute ~