The black carp is a common freshwater fish, which is distributed more in the Yangtze River Basin and the rivers in the plains to the south of China. The growth rate of black carp is relatively fast, and their size is relatively large. Under normal circumstances, the weight of black carp can increase by 3-5 kilograms a year, and the length can increase by about 20 centimeters a year.
Specifically, the herring does not gain a fixed length and weight every year during its growth stage. Generally speaking, in the first three years, their growth rate is the fastest, the most vigorous growth, the fastest increase in body size. In this stage, they can gain more weight in a year, at 5 kg or more; The length increase is also the fastest, more than 20 centimeters, and may reach 30 centimeters. In the following process, their size will continue to increase, but at a slower rate.
As mentioned above, from the point of view of growth rate, one of the characteristics of black carp is that it grows faster, and they can increase by 3-5 catties every year. Specifically, the growth rate of black carp living in different environments is also different. Some herrings live in a more suitable environment, the surrounding water temperature, water quality is more appropriate, and they also have enough food to eat, at this time their growth rate is fast, a year can increase the number of kilograms. Some herrings live in places where the environment is not suitable, and may even live in polluted places, at which time the herrings may be stunted and can not grow too much in a year.
