The Chinese sturgeon is a fish species belonging to the family Acipenseridae in the order Sturgeon, also known as the Chinese sturgeon, Chinese sturgeon, swordfish, elephant fish, tuna, etc. Body length spindle shaped, pectoral fins flat in the front and slightly laterally flattened in the back; The head is relatively long, accounting for more than half of the body length; The kiss is elongated in a conical shape, with a flat and narrow front end; Extremely small eyes, round, lateral position; Lower mouth, with a large, curved mouth and sharp small teeth on both jaws; It should be closer to the eyes than to the snout; The gill pores are large and connected to the isthmus; Gill rakes are thick and tightly arranged; The dorsal fin is located behind the body, close to the base of the caudal fin; The anal fin is located below the dorsal fin; Developed pectoral fins; There are no scales on the body surface. The back and tail fins are dark gray or light gray, while the fins and abdomen are white.

The duckbill sturgeon, scientific name American paddlefish, also known as paddlefish, is a fish species in the family Acipenseridae of the order Sturgeon. It is named after its shape resembling a duckbill and a spoon. The duck billed sturgeon is widely distributed in large rivers and nearby bay coasts in the central and northern regions of the United States. It lives year-round in freshwater lakes, reservoirs, and rivers without the need for migration and generally inhabits the middle and upper layers of water. The fish feeds on planktonic animals throughout its life. The duck billed sturgeon is a warm blooded fish with advantages such as fast growth, wide feed sources, low production costs, easy fishing, and high economic value. The juvenile duck billed sturgeon has a unique shape and can be used as a precious ornamental fish. The duck billed sturgeon eggs are processed into caviar.