What kind of fish is a platypus fish?

The platypus, the scientific name spoon Sturgeon, originates from the Mississippi River Basin in the United States. It is a large freshwater economic fish of the family Sturgeon of the family Sturgeon. It is a rare Sturgeon that lived and survived on the earth since 300 million years ago (that is, the dinosaur period). It is also one of the only two species of Sturgeon in the world. It belongs to the family Sturgeon with the Chinese Sturgeon and the white Sturgeon in the Yangtze River.

Platypus fish is a cartilaginous fish, the body surface is bare, Ze run scaleless, the kiss is spoon-shaped, shaped like a duck bill, so it is also known as duck-billed Sturgeon. The kiss is very long, flat and pulpy. The body surface is smooth and scaleless, the back is black, blue and gray, and there are often some spots among them. The side of the body is a little ochre and the abdomen is white. The mouth is big and the eyes are small, with the forehead higher than the mouth. The Gill rake is dense and slender, the operculum is large and extends back to the ventral fin, the caudal fin bifurcates, and the caudal stalk is covered with pedicel-shaped nail scales.

Duck-billed fish is a kind of filter-feeding fish, which mainly feeds on zooplankton and cladocera, especially on water fleas, and occasionally eats small aquatic insects such as Chironomus larvae. The spoon-nosed Sturgeon, which is less than 12 cm long, can nibble away at zooplankton one by one, as well as small fish and shrimp. The fish is more than 12 centimeters long, and its feeding organs are well developed, switching to filter feeding, which can catch fast swimming copepods. As the spoon-nosed Sturgeon grows up, it also eats pellet feed.

Platypus, which lives in the slow-moving waters of the Mississippi River, is highly adaptable to temperature changes and is found in 22 states in the Mississippi River basin in the United States, including the Missouri River to Montana, the Ohio River and its major tributaries. Platypus spawn in the shoals of a particular basin every spring, and the number of eggs laid ranges from 300 to 6 million. The sexual maturity of male fish is 7 years old, and that of female fish is 9 years old. the life span of wild spoon Sturgeon is up to 55 years old, but usually only lives to 20-30 years old.

Duck-billed fish is a kind of valuable and large freshwater economic fish in North America, with delicious meat, rich collagen and rich nutrition in the snout. Caviar is expensive in the international market. Fish skin can be made into high-quality leather, about 200 yuan per kilogram of finished fish. Platypus fish can also be sold as ornamental fish at 30 yuan each with a body length of 15 centimeters. Artificial breeding began in the United States in the 1960s, and China was introduced from the United States in 1988. Now it has successfully raised seedlings and started popularizing production.