Silver carp and silver carp belong to CYPRINIDAE in ichthyology, but they have different characteristics.
Chubby fish body color: the back and upper half of both sides are slightly black, and the abdomen is gray with black spots. Silver carp's body color is generally silvery white and its fins are grayish white.
The head of chub fish is larger, accounting for about one third of its body length, while the head of silver carp is smaller, accounting for about one quarter of its body length.
The fin of chubby fish is larger than the base of ventral fin. The pectoral fin of silver carp extends outward, and the tip of the pectoral fin only reaches the base of the ventral fin.
The sharp edge of silver carp is only behind the ventral fin. The sharp edge of the abdomen of silver carp runs through the whole ventral surface before and after the ventral fin.