2019 how much is the price of silverfish and dried silverfish per jin? How to breed it?

Silverfish is one of the most valuable aquatic products in China, known as the treasures on the table, and has long been well-known at home and abroad, and is a hot spot of aquaculture in recent years. So how much is the price of 2019 silverfish and dried silverfish per jin? How to breed it?

How much is the silverfish per jin?

The nutritional value of silverfish is very high, and the price is not very expensive, fresh fish is about 610 yuan per jin, dried fish is about 30,40 yuan per jin. And silverfish is rich in resources, high nutritional value and delicious taste, which can be used in food processing, fishmeal processing and frozen products processing. As fish breeding bait, its frozen products sell well at home and abroad, and become one of the important species for export to earn foreign exchange in recent years.

2. How to cultivate silverfish

1. Pond requirements

The first thing to cultivate silverfish is to build a pond suitable for the growth of silverfish, and you can choose the Laokou pond that has been farmed before. To ensure that the pool water is clean, leeward, adequate light, good drainage and irrigation capacity. According to the number of aquaculture, the area and number of ponds shall be controlled, and the depth of the pond shall not be less than 2 meters. There should be some aquatic plants around. When you pay attention to it, the silverfish is very fragile. Therefore, we cannot mix with carnivorous and omnivorous fish to prevent these fish from attacking and eating silverfish.

2. Seedling cultivation

First of all, it is necessary to prepare the seedling cultivation pond, turn over the mud at the bottom of the cultivation pond, and then carry out comprehensive and thorough disinfection in the right amount of clean water. Because the growth capacity of silverfish seedlings is more, ordinary pond water can not be cultivated, so it is necessary to use fertilizer and water to cultivate. Young fish feed on rotifers and all kinds of nauplius and start eating about 9 days after hatching. bait should be put in time after feeding, which will lead to death if not in time for more than three days. Therefore, before the young fish start eating, it is necessary to apply enough fertilizer to ensure that the young fish have enough bait after eating. Fertilizer should be applied frequently during the cultivation period, and the amount of fertilizer should be controlled according to the water color and water quantity to ensure that the transparency of the pool water is more than 35 cm.

3. Adult fish culture

The growth ability of adult fish is strong, and the growth rate will be obviously accelerated, so it is necessary to regularly fertilize and cultivate plankton, use mature farm fermentative fertilizer, control the dosage, and adjust appropriately according to the water quality and the quantity of culture. Then it is necessary to prevent floating head in the process of culture, because the growth of silverfish has a very high requirement for dissolved oxygen. If the silverfish's floating head is not dealt with in time, it may lead to a large area of death. When the phenomenon of floating head is serious, it is necessary to reduce the amount of fertilizer, avoid too much plankton, change water regularly and increase oxygen in time.

4. Feeding and management

The eating habits of silverfish will change at a certain stage, gradually changing from vegetarian feed such as Cladocera to carnivorous feed. Therefore, we should observe the growth of the silverfish regularly. When we find that there are a small amount of fish and shrimp in the intestines and stomach when the body length of most silverfish is close to 0.8-1 cm, it shows that the silverfish is already in the period of food conversion. At this time, we should add an appropriate amount of small fish and shrimp smaller than the silverfish to the feed to promote the growth of the silverfish. Should pay attention to the number of fish and shrimp, to prevent too dense, in May-June when the introduction of appropriate amount of pregnant green shrimp, hatched shrimp hatched just in time for silverfish.