1. Chub is a pelagic fish. In spring, summer and fall, the vast majority of time in the waters of the upper and middle layers of the swimming for food, and in winter dive to the deep water overwintering.

2. It is a typical filter-feeding fish. Main food: silver carp feed on zooplankton throughout their lives, mainly eat zooplankton in the fry stage, up to 1.5 cm or more gradually switch to eat phytoplankton, and like to eat grass carp feces and put chicken and cow dung. It also eats soybean milk, soybean dregs powder, bran and rice bran, etc., and prefers to eat artificial micro-granular feed. It is very interested in sour food and has an appetite for bad food. The bait of silver carp has obvious seasonality. In addition to plankton in spring and fall, it also eats a lot of rotting debris bait; the lower the water level in summer, the greater its intake; in winter, it eats less and moves less. It is suitable for breeding in fertilized water. The length of the intestinal tube is about 6-10 times of the body length.

3. Appetite is directly proportional to water temperature. Silver carp like high temperature, the optimal water temperature is 23℃~32℃. In the hot summer, the chub's appetite is the most vigorous. In the north of July to August is a good time to catch chub, after the autumn equinox, the weather is cooler, chub appetite has decreased, it will be difficult to catch.

4, lively temperament, like to jump, have the habit of swimming against the current, but the action is not very agile, more clumsy. The silver carp likes fat water, and individuals of similar size often gather and swim to the middle and upper layers of the water, especially in the open water area where the water quality is fatter.

5, timid afraid of disturbance. When disturbed or touching the net line, they jumped out of the water and escaped from the net.

6, fast growth, high yield. The age of sexual maturity of silver carp is 1-2 years earlier than that of grass carp. Mature individuals are also smaller, generally more than 3 kilograms of female fish can reach maturity. 5 kilograms of female fish relative egg carrying capacity of about 4-5 million / kg body weight, spawning in April to May each year, the absolute egg carrying capacity of 20-25 million. Eggs are floating. The spawning period is similar to that of grass carp. Under pool culture conditions, if the bait is sufficient, the fish can grow to 500-800 grams in the current year, and the weight of the third-aged fish can reach 3-4 kilograms, which can weigh 30-40 kilograms in natural rivers.

7, the ability to tolerate low oxygen is extremely poor, the lack of oxygen in the water immediately floating head, some will soon die.