Duckbill fish is a kind of fish, belonging to the genus Spodoptera in the family Spodoptera.
The paddlefish is native to the Mississippi River valley in the United States, and its feeding habits are similar to those of bighead carp in China. It feeds on zooplankton and is a filter-feeding fish. Its kiss is particularly long and flat, such as pulp; The body surface is smooth and scaleless, the back is black, blue and gray, and there are often some spots inside; The side is a little ochre and the abdomen is white; The mouth is big and small, and the forehead is higher than the mouth; The gill rakes are dense and slender, and the gill cover bone is large and extends backward to the ventral fin, and the caudal fin is bifurcated, and the caudal stalk is covered with pedicled scales.