Silver carp is a typical filter-feeding fish. In the fry stage, it mainly eats zooplankton. When it is over 1.5 cm, it gradually changes to eat phytoplankton, and also eats soybean milk, bean dregs powder, bran and rice bran, and prefers to eat artificial micro-particle compound feed. Suitable for breeding in rich water. The length of intestine is about 6- 10 times of body length.
The sexual maturity age of silver carp is 1-2 years earlier than that of grass carp. Mature individuals is also small, generally more than 3 kilograms of female fish can reach maturity. The relative fecundity of a 5 kg female fish is about 40,000-50,000 eggs/kg body weight, and the absolute fecundity is 200,000-250,000 eggs. Egg floatability. The spawning period is similar to that of grass carp.
It can weigh 30-40 kilograms in natural rivers. Under the condition of pond culture, if the bait is sufficient, 1 year-old fish can reach about 0.8 kg.