The duckbill is a cartilaginous fish with an exposed, moist, scale-free body and a spoonlike muzzle shaped like a duck's beak, hence the name duckbill sturgeon. The gill rakers are dense and thin, the gill cover bones are large and extend backward to the ventral fins, and the tail is forked and striped with armored scales. Living in the slow-flowing waters of the Mississippi River, the beak sturgeon is highly adaptable to temperature changes and is found on 22 continents in the Mississippi River Basin in the United States.

A. What kind of fish is the duckbill

The duckbill is a cartilaginous fish with a bare, moist, scale-free body and a spoonlike kiss, shaped like a duck's beak, and is therefore also known as the duckbill sturgeon. The kiss is particularly long, flattened, and pulp-like. The body surface is smooth and scale-free, and the back is blackish blue-gray, often with spots between them. The sides of the body are somewhat ochre colored and the belly is white. The mouth is large with small eyes and the forehead is higher than the mouth. The gill rakers are dense and elongated, the gill cover bones are large and extend backward to the ventral fins, the caudal fin is forked, and the caudal peduncle is draped with pedunculated nail scales.

Two, duckbill fish eat

Duckbill fish is a filter fish, the main food zooplankton, branchiostoma, especially like to eat water fleas, but also occasionally ingest mosquitoes and other small aquatic insects. Spoonbill bonito with a body length of less than 12 centimeters can eat zooplankton one after another, as well as small fish and shrimp. Fish over 12 centimeters in length have well-developed feeding organs and switch to a filter-feeding diet that catches fast-swimming copepods. As the individual spoon-nosed sturgeon grows up, it also ingests pellet feed.

Three, the duckbill's main habitat

1, the duckbill lives in the Mississippi River slow-flowing waters, the ability to adapt to changes in temperature, in the United States than the Mississippi River Basin in the United States are found in all 22 continents, including the Missouri River to Montana, the Ohio River and its major tributaries of the basin. Duckbills spawn in the shallows of specific watersheds each spring, producing between 3 and 6 million eggs. Males are sexually mature at 7 years of age and females are sexually mature at 9. Wild spoonbill bonefish live to be 55 years old, but usually only live to be 20 to 30 years old.

2, duckbill is North America's precious large freshwater economic fish, meat is delicious, the kiss contains collagen, rich in nutrients, is a feast of delicious food. Caviar is expensive in the international market, fish skin can be made into high-quality leather, about 200 yuan per kilogram of finished fish. Duckbill fish can also be sold as ornamental fish, body length of 15 centimeters per tail 30 yuan. The United States in the 1960s began artificial breeding, China introduced from the United States in 1988, has now successfully artificial nursery and began to promote production.