Giant bony tongue fish-the largest freshwater fish dragon in the world
Giant bone tongue fish
monitor
Common name: dragon, walrus
English name: Pirarucu
Rmes osteoglossa
Also known as arapaima or paiche.
South American fish of the order Osteoglossiformes, scientific name Arapaima gigas. It is one of the largest freshwater fish in the world, with a length of 2.4 meters (8 feet). This genus has primitive characteristics and ancient fossil records. The tail is perfectly round because the dorsal fin and the anal fin are close to the caudal fin. The swim bladder has a certain respiratory function.
Native to the Amazon River in South America.
The largest freshwater fish in the world. The largest individual can reach 2-6m in length and weigh 100kg. Huge, long and slightly flat. The bones of the head are composed of free plate bones. Mouth, don't need it. Without the mandible, the teeth on the tongue are strong and developed. The swim bladder is surrounded by blood vessels, its inner surface is honeycomb, and there are often special suprabranchial organs. Scales are big and hard, and they are inlaid. The dorsal fin and the anal fin are located at the back of the body, facing each other. The pectoral fin is very low. The ventral fin is located behind the abdomen. The caudal fin is round. The body is grayish green, the back is dark, the abdomen is light, and the tail fin and back are red.
An ancient primitive fish. Feed on fish, shrimp and frogs. It is one of the largest freshwater fish in the world because of its huge size and slow movement. During the breeding season, males dig holes to lay eggs, and the young fish develop for 2-3 months, and then leave after the young fish can live independently.
Meat can be made into dry products or salt products, which is a very popular food in producing areas. When the teeth are dry, they can be used instead of filing tools. Live fish are beautiful in color and used for viewing.
As a ichthyologist and outdoor activity planning expert at Yale University, Ed? MiG Dolsky has the opportunity to fish all over the world. One of his? Unforgettable memory It is a Piruku that 1953 met on the Rupruni River in Guyana (then British Guyana). He has caught two such fish, one is 5 feet long and weighs 93 pounds, and the other is 6 feet 4 inches long and weighs 148 pounds, which is amazing. MiG Dolsky and two natives from the west of Kyle struggled 1 hour for 40 minutes to get the big fish into their canoe. The fish's body is almost as long as a boat, and its weight keeps the boat 3 inches above the water. His fishing achievements became international news, which was reported by The New York Times on the front page and reprinted by some scientific magazines. Giant bone tongue fish is an ancient fish species that lives in the most primitive tropical jungle waters in the world. They are common in the Amazon river basins of Brazil and Peru, and tributaries of the Amazon river system in Venezuela and Colombia. This monster has a long pointed head, a blue metal back, bronze sides and large scales, some of which show bright red edges. The giant bone tongue fish mainly lives in slow-flowing rivers, and even can survive in water with low oxygen content, because it has a huge air sac, which is composed of lung tissue and can be used as an additional respirator. It can also float to the surface for oxygen like Atlantic silver carp. MiG DOLSKI pointed out that giant bony tongue fish often lurks under obstacles on the water surface, waiting for an opportunity to open its huge mouth to devour its prey and bait. Although he didn't jump out of the water after taking the bait, he also struggled to swing or roll on the water.
Introduction of giant bone tongue fish
1 Basic introduction
Giant tongue fish, also known as giant tongue fish, commonly known as dragon hairtail. English name: Pirarucu. Also known as arapaima or paiche. Mainly distributed in the Amazon River in South America, it is considered as a living fossil.
Giant bone tongue fish is named for its strong and developed teeth on its tongue. This huge fish has a sharp and long head, a blue metal back, bronze sides and large scales, some of which show bright red edges. The bones of the head are composed of free plate bones.
Live giant smooth-tongued fish, brightly colored, used for viewing. Due to the decreasing number of wild ethnic groups, some countries began to restrict the fishing and export control in the wild environment, and most of them were artificially propagated in the aquarium market (attached: "Brazil encourages fishermen to breed the world's largest freshwater fish-giant tongue fish"). In addition, many aquaculture experts are optimistic about its advantages of high growth rate and large size, and hope that it will become the next star of aquaculture one day.
Giant bone tongue fish has great economic value. The giant bone tongue fish with certain ornamental value is also very popular with aquariums and individual breeders all over the world, and can already be seen in aquariums in Beijing and other places.
2 Appearance characteristics
The adult body length of gigantosaurus can exceed 2.5 meters, and its weight exceeds 100 kg. Giant bone tongue fish is huge, long and slightly flat. The bones of the head are composed of free plate bones. Mouth, don't need it. Without the mandible, the teeth on the tongue are strong and developed. The swim bladder is surrounded by blood vessels, its inner surface is honeycomb, and there are often special suprabranchial organs. Scales are big and hard, and they are inlaid. The dorsal fin and the anal fin are located at the back of the body, facing each other. The pectoral fin is very low. The ventral fin is located behind the abdomen. The caudal fin is round. The body is grayish green, the back is dark, the abdomen is light, and the tail fin and back are red. Giant bone tongue fish belongs to the remaining ancient freshwater fish. It is speculated that it first appeared in 1 100 million years ago. Because there are hard teeth in the tongue, this kind of fish is called bone tongue fish.
3 living environment
Mainly lives in rivers in South America. Known to Brazilians, Pirarucu is the largest freshwater fish in South America, inhabiting the natural lagoon and slow-moving reach of the Amazon River.
4 living habits
strange hobby
Giant bone tongue fish lives in the most primitive tropical jungle waters in the world, mainly feeding on small fish, but occasionally preying on snakes, turtles, frogs and insects, and even small crocodiles. Because of the hot weather, the oxygen content of the slow-moving river water is reduced, and the giant bone tongue fish needs to float to the surface from time to time to swallow air before breathing. In the dry season, it can also protect itself by drilling holes in sediments. Giant bone tongue fish has a strong brute force. Using its tail as a weapon, it can easily knock down adult men, break bones and cause a lot of internal injuries.
type
Giant bone tongue fish lays eggs in shallows like salmon. The spawning period is1-May, and about 1.6 million eggs are laid in several times. Eggs can hatch in about 5 days. At this time, the male fish's tail turns red, and the male fish has the responsibility to protect the fish eggs and take care of the newly hatched young fish. The head of the young fish is black, and the head of the male fish is black, so the young fish often surround the head of the male fish and are unwilling to leave. Female fish will also swim around to catch up with possible enemies. Sexually mature at 4-5 years old, and the life span of the cultured giant tongue fish is 15-20 years old.
5 protection level
The red list of IUCN is listed as: insufficient data (DD)
This species has been listed as an endangered species in the IUCN Red List, and its fishing is strictly controlled.