Anglerfish: Scientific name? ? ? ? Fish, commonly known as stuttering fish, frog, frog, anglerfish and so on. It is a bony fish. ? ? ? Eye,? ? ? ? Family, a worldwide fish, is distributed in Atlantic Ocean, Pacific Ocean and Indian Ocean, with various species.

Anglerfish (scientific name? ? ? ? ), also known as "electro-optic fish", is a strange-shaped fish that lives in the ocean. The body length is generally 45 cm and the longest is 2 meters. The body color varies from brownish green to grayish black, and there are mottled spots on the body surface. The anglerfish has a flat body, a big head, developed dorsal fins and pectoral fins, and a long tail like a whip. There is a row of sharp spines at the junction of the tail root and the fish body, and the sharp spines can produce venom. Looking down from the back of the fish, it looks like a lute, so it is called "anglerfish".

Introduction:

Anglerfish is a benthic fish, generally living at a depth of 2 to 500 meters below sea level, and likes the bottom of gravel. Anglerfish feed on all kinds of small fish or young fish. When it comes to predation, we can't help but talk about the unique "predation tool" of anglerfish.

There is usually a fishing rod-like structure on the kiss of the female fish's head. There is a fleshy protrusion at the end of the "fishing rod", which looks like a worm, and anglerfish use it to trap other gluttonous fish. Because anglerfish live in the deep sea without light, there is usually a luminous organ at the end of the "fishing rod", which can emit cold light to help anglerfish trap other fish. So anglerfish is also called "electro-optic fish".

? ? ? ? Fish have two dorsal fins. The first dorsal fin is different from ordinary fish, and consists of 5 ~ 6 independently separated fin spines (6 are yellow? ? ? ? , 5 are black? ? ? ? ）。 The first two silvers are located on the back of the kiss. Its top has a cortical spike. The second dorsal fin and arm fin are both located at the tail. The pectoral fin is wide, lateral, round, and the base is arm-shaped, which is helpful for the body to slide. Short ventral fin, throat position. The caudal fin is rounded. The body is bare and scaleless, and there are cortical processes of different sizes above the head and on the side edge of the body. This kind? ? ? ? The total length is only 10 cm. You can't meet prey in the deep sea, so try to swallow food bigger than yourself. Sharp teeth are inward, and once the prey is caught, it will not escape. ? ? ? ? Fish doesn't swim much, so there are few opportunities for predation. In the long-term evolution process, its dorsal fin has changed: the first dorsal fin gradually extends to the head, and the first three fin spines of the dorsal fin are separated in front of the head, and there is a luminous flap at its end. When small fish swim near the shining point, ? ? ? The fish shakes its fishing tackle, lures the fish to the bait and sends it into the mouth. ? ? ? ? Fish has a big appetite, and its stomach is often full of sharks. It grows in the depths of the dark sea, moves slowly, and lives unsociable. In the vast ocean, it is difficult for male fish to find a female fish. Once they meet a female fish, they will be attached to each other for life, and the nutrition of the male fish is also supplied by the female fish. Over time,? ? ? ? Fish formed this unique spouse relationship. Johnson? ? ? ? Our stomachs can swell, so big prey can swallow them. The front half of the body is flat and flat, and the tail is cylindrical. Generally, it is 40-60 cm long and weighs 300-800 grams. The head is extremely large and flat, the mouth is wide, there are black and white markings in the mouth, and the jaw has lodging fangs 1~2 rows. The body is soft and scaleless, with a brown back and a gray belly. There are many cortical processes on the edge of the head and body. There are 6 separate fin spines in the front of dorsal fin. The first spine is located on the back of snout with cortical spikes at the top. The pectoral fin is wide and arm-shaped on both sides of the body; The gluteal fin has 8~ 1 1 root fin. Each fin is dark brown.

The exact mechanism of anglerfish luminescence has not been fully understood. At present, there is a view that there is a substance called "fluorescein" in the light-emitting organ of anglerfish, which can emit luminescence under the oxidation of luciferase.