The herring is a kind of common freshwater fish. Among freshwater fish, their body size is relatively large. In terms of length, the length of black carp can reach more than 1 meter, and the larger individual can reach 1.5 meters. From the weight point of view, black carp can generally reach 15-20 kg. For example, the average weight of herring living in the Yangtze River can reach this range. Mylopharyngodon piceus also have larger bodies, which can reach about 70 kilograms in weight. The largest herring on record is more than 1.8 meters long and weighs more than 100 kilograms.
Specifically, herrings living in different environments have different body shapes. Some herrings are farmed, and such herrings are generally sold after three or four years and cannot continue to grow, so they generally cannot grow too large. There are some species that live in the wild, if they are not fished by hand, they can grow all the time, and they can grow bigger. Of course, this also needs to be in the right circumstances. If the wild herring live in a very unsuitable environment, it will also affect their size, resulting in their stunted growth and can not grow too large.
In order to reproduce the black carp, certain conditions need to be met, and the age condition is one of the important aspects. Because only after sexual maturity, herring can reproduce. Specifically, the specific age of sexual maturity of female and male fish is different. The age of sexual maturity of female fish is relatively late, generally from 5 to 7 years old to enter the stage of sexual maturity. Males are sexually mature earlier, at the age of 4 or 5, and can reproduce. From the weight point of view, when the weight of black carp reaches about 15 kilograms, it generally has the ability to reproduce.
