It weighs 2 Jin. Most people's three fingers are 6 cm wide, so a person with three fingers is 6 cm wide. Silver carp six centimeters wide is equivalent to six kilograms, so silver carp with three fingers is six kilograms. Silver carp generally refers to bighead carp. Bighead carp is a kind of fish belonging to the genus Bighead carp in CYPRINIDAE. The body is slender, the side is flat, and the abdominal rib starts from the root of the pelvic fin and reaches the front of the anus. The head is big and round. The kiss was wide and straight. The eyes are located below the head axis.