CATDOLL : CATDOLL: How to raise mandarin fish? Mandarin fish breeding technology

Mandarin fish is delicious and has few bones. It is also the most common fish on the table, which has led some people to want to farm it. So, how to farm mandarin fish? What are the key points of mandarin fish farming technology?

How to raise mandarin fish

Mandarin fish, commonly known as Guiyu or Osmanthus fish, is a ferocious freshwater bottom-dwelling fish in the order Perciformes. It has tender and delicious meat and is rich in nutrition. The three main species of Mandarin fish in my country are C. chuatsi, C. chuatsi and C. chuatsi, among which C. chuatsi is the most farmed. Guangdong is the main production area of ​​Mandarin fish fry. The earliest batch of Mandarin fish fry in the country are hatched from March and April every year. At the same time, adult Mandarin fish in Guangdong are sold all over the country all year round. It is understood that Mandarin fish farming in Guangdong Province increased in 2015, but the total number of fry released nationwide was the same as last year.

Mandarin fish breeding technology

The Aohua fish, also known as the Guiyu and Mandarin fish, belongs to the family of fish in taxonomy. The Aohua fish is the most precious fish among the "Three Flowers and Five Luos", and even in the past, ordinary people could hardly afford it. Usually, the Aohua fish lives alone, which is also the common feature of almost all carnivorous fish. The Aohua fish has a strong adaptability to water temperature and is distributed in the water systems of both northern and southern China. The Aohua fish lives near the bottom of rivers, lakes and rivers with clear water, and especially likes to hide behind the rocks at the bottom of the water or in the lush grass. In the autumn and winter seasons when the water temperature is low, it hibernates in deep water, and when the water temperature rises in spring, it gradually swims to the water grass near the shore where there is abundant food to find food. The Aohua fish is mainly active at night, and generally lies in the cracks of rocks, tree roots, and bottom pits during the day, and is less active. The Aohua fish is very careful when eating. After swallowing fish and shrimp, it will spit out the fish bones and shrimp shells, leaving only the meat in its stomach. This unique feature is rare among other carnivorous fish.

1. Selection of breeding site

Mandarin fish is a typical ferocious carnivorous fish, and its living environment requires fresh water and rich dissolved oxygen. Mandarin fish only eat live bait fish when they are not domesticated. These conditions require that the pond conditions selected for breeding mandarin fish should be easy to drain, with a water depth of 1.5-2.5m, less than 10m of silt at the bottom of the pond, and oxygenation facilities. The pond area should not be too large, and 1000-3000O is more appropriate. In order to ensure that there is always a supply of live bait fish, the breeding pond is best located in an area rich in natural wild fish, such as near rivers, reservoirs, lakes, etc. If you breed bait fish to feed mandarin fish yourself, the breeding scale is determined by a ratio of 4:1 between the area of ​​bait fish pond and mandarin fish breeding pond. Of course, whether the transportation is convenient is also an issue that cannot be ignored in choosing a breeding site, because the transportation volume of bait fish is relatively large during the breeding process of mandarin fish.

2. Germplasm of seedlings

Through the experience gained from breeding mandarin fish, the quality of mandarin fish seedlings varies. Now, due to the lagging management of seedlings by the fishery administration and the degeneration of the broodstock used for mandarin fish breeding, the overall quality of mandarin fish seedlings has a downward trend. When purchasing mandarin fish seedlings from other places, it is necessary to investigate the scale and technical level of the mandarin fish breeding farm, and try to purchase seedlings from breeding units that breed and raise their own seedlings and use broodstock caught in natural waters. Ensure that the purchased seedlings have pure germplasm, strong disease resistance, and fast growth rate.

3. Fish breeding model

In the northern aquaculture areas, 4-5cm mandarin fish are generally released in May and June for breeding. About 1,000 mandarin fish are released for every 6660 square meters of water surface. Most of the mandarin fish that year do not reach the specifications of commercial fish, and the specifications are about 350g in November. To reach the specifications of commercial fish over 500g, it is necessary to continue breeding until June or July of the following year. However, the price of commercial mandarin fish, especially live mandarin fish, varies greatly throughout the year, showing a trend of low prices at both ends and high prices in the middle. The price of mandarin fish sold in July and August is generally the highest price of the year. Therefore, the cross-year breeding model of mandarin fish is adopted. Although the breeding time is longer, the benefits are also acceptable.

Differences of Wild Mandarin Fish

Wild mandarin fish has more bones than farmed ones. Wild ones are fresher, but they have more parasites. Farmed ones are not as fresh as wild ones, but they are safer to eat.