How long is the life span of herring?

Herring, also known as black fish, snail green, etc., inhabit the middle and lower layers, feed on snails, clams, shrimps and aquatic insects, are sexually mature at the age of 4-5, lay eggs in the upper reaches of rivers and can be artificially propagated, and are the main freshwater fish culture objects in China. Let's take a look at how long the life span of herring is.

How long is the life span of herring?

Generally speaking, the lifespan of herring is more than 20 years, and the 5-year-old (1-year-old is 1-year-old) will grow up and grow very fast every year. When he is about 20 years old, the growth rate will slow down.

The growth cycle of herring

The growth rate of herring is very fast, 2-3 winter age can reach 3-5 kg, the largest individual can reach 70 kg, the common individual weight in the Yangtze River is about 15-20 kg, and the sexual maturity is 4-5 years old. It breeds in places with high flow velocity in the main stream of rivers from April to July. After reproduction, it is often fattened in rivers and bays and lakes, and overwinters in deep water in winter.

The oldest herring

In China, the largest herring specimen, weighing 218 jin, was caught in Jinniu Lake, Liuhe District, Nanjing in 2005. It is 1.86 meters long and weighs 218 jin. It is about 40 years old by scale identification.