Culture techniques of black fish (mullet)

Black fish, also known as mullet, raw fish and so on, are widely farmed because of their rich nutritional value and high economic value. So, what are the culture techniques of mullet? Let's get to know it together.

1. Pond selection

Black fish culture should first determine the culture area of the pond, black fish culture should not be too much, but can be divided into several ponds separately, a pond of about 2-5 mu, water depth of about 2 meters, the bottom of the silt should not be too much, in the pond inlet and outlet must be set up anti-escape net to prevent black fish from escaping in the process of culture, quicklime needs to be sprinkled and disinfected the fish pond before stocking You can also plant water floating lotus about one meter wide in the pond, which can not only prevent black fish from jumping out of the pond, but also effectively shade the pond. The pond should choose to be far away from noisy places with sufficient clean and sanitary water sources and a good drainage and water exchange system.

2. Release of fish species

Fish fry are generally bought on the market when choosing fish fingerness. although the prices on the market are relatively low, their specifications are different, and they often cause mechanical damage to the fish, so the pond must be disinfected with quicklime before releasing the fry, or soak the fry with salt water and bleach for about 20 minutes to disinfect the fry. The stocking density of black fish should be determined according to various factors such as culture area, feeding technology, feed and so on. Generally, a maximum of 2500 black fish can be cultured per mu.

3. Feed feeding

As long as people with experience in blackfish culture know, blackfish is a very ferocious carnivorous fish, whether it is live or dead meat, it mainly feeds on all kinds of small fish and shrimps in the pond. When feeding blackfish artificially, it must be fed at a fixed point and on a regular basis every day, at least twice at 10:00 and 3pm every day. Generally, after a week of stocking, the fish will begin to rush to the surface. When the black fish is eating, it is also necessary to carefully observe the eating situation of the black fish. If there are fewer black fish near the food or when the food grab between the black fish is not intense, it means that most of the black fish are full and can stop feeding.

4. Feeding and management

The diet of black fish is very large, so it also has more feces, so it will soon make the water in the pond become more and more fat, resulting in a large number of zooplankton breeding and hypoxia in the pond. therefore, when breeding, we should pay attention to observe the change of dissolved oxygen in the water, if the phenomenon of hypoxia occurs, we must increase the oxygen in time, if the situation is more serious, we should adopt the method of surface sterilization. Sprinkling trichlorfon about 3 meters on the edge of the pond, although the black fish has strong disease resistance and low incidence in the process of culture, it will still lead to the disease of the black fish in autumn if it is not managed correctly. therefore, at this time, we must always pay attention to the growth of black fish, find abnormal conditions, and make timely corresponding measures.

The above is the introduction of black fish culture technology, I hope I can help you!