Nowadays, people's living standards have improved, and there are more choices in the choice of diet. Especially, parents are willing to provide better conditions for their children's development and growth. If they eat well, they will have nutrition. As we all know, shrimp has a high calcium content and is very popular in the market. Many parents like to buy it for their children. However, in recent years, there has been an exotic shrimp species that looks like prawns. It was introduced to China only 30 years ago. It is also increasing year by year, and the price is not cheap. Last year, it sold for more than 80 yuan a kilogram, but this year it dropped by half. Some farmers even said that they would not raise it, which is really puzzling.

The shrimp shown in the picture is Penaeus vannamei, also known as white-limbed shrimp. Penaeus vannamei is a tropical shrimp with wide temperature and salinity, which is native to tropical waters along the Pacific coast of the western United States. It is known as one of the three excellent species with the highest aquaculture yield in the world because of its strong adaptability, fast growth speed, strong disease resistance and short breeding period.

As you can see, Penaeus vannamei is very similar to Chinese prawns, but its size is bigger, and the longest adult can reach 24 cm. Penaeus vannamei has a thin shell, a very high meat yield, delicious meat and rich nutrition, so it is very popular in the market and in great demand after being introduced to China, so many farmers have started to breed Penaeus vannamei.

In recent years, the market of Penaeus vannamei is very good, and its price has been increasing to a high level, but this year it suddenly fell to more than 40 yuan a kilogram, almost at half price. Perhaps it is because of the market of Penaeus vannamei that many farmers have reduced the breeding area of Penaeus vannamei.

Then what caused the market to change so quickly? It is understood that a very important factor is that the bad weather last year led to a serious reduction in production in South America, and farmers increased the breeding area of Penaeus vannamei this year. However, this year's weather is better and the rainfall is less. These factors are not conducive to the growth of Penaeus vannamei, so this year's output will be more, and the price will not be sold. Some people have also lost money, so they have given up farming.