How to cultivate Pelteobagrus fulvidraco in pond

Pond culture of Pelteobagrus fulvidraco is also known as pond breeding or pond mixed culture of Pelteobagrus fulvidraco, which can be Pelteobagrus fulvidraco or Pelteobagrus fulvidraco. Because Pelteobagrus fulvidraco has strong ability to adapt to the environment, the culture technique of capturing Pelteobagrus fulvidraco is relatively simple.

(I) requirements for pond conditions

According to the environmental requirements of pollution-free aquaculture, the water source in the aquaculture environment should be pollution-free, the chemical composition of sediment and water quality should not exceed the standard, and the pond area should not be strictly required. However, the ponds for Pelteobagrus fulvidraco culture still require sufficient water source, convenient entry and drainage, and rich in all kinds of bait organisms (shrimp, snail, fish, etc.).

(2) several modes of capturing Pelteobagrus fulvidraco

As there are many modes of pond fish culture in China, the collocation of different quantities of Pelteobagrus fulvidraco according to different farmed fish patterns is an important guarantee to improve efficiency. It should be noted that the feeding ability of these fish is stronger than that of Pelteobagrus fulvidraco in the same feeding pattern.

1. The filter-feeding fishes of Pelteobagrus fulvidraco are mainly silver carp and bighead carp, which live in the upper or upper and middle layers of the water body as the main culture. the species in this model are grass carp, bream, common carp, crucian carp and tilapia. From the point of view of feeding habits, silver carp and bighead carp take filtered plankton as food, grass carp, bream and bream take grass as the main food, and common carp, crucian carp and tilapia are omnivorous fish. It can be seen from the feeding habits that in this model, there is no contradiction in the water layer and feeding habits between silver carp, bighead carp, grass carp, bream, bream and Pelteobagrus fulvidraco, but there is a certain contradiction between common carp, crucian carp, tilapia and Pelteobagrus fulvidraco. Therefore, omnivorous fish such as common carp, crucian carp and tilapia should be reduced in this model.

Generally speaking, captive culture of Pelteobagrus fulvidraco does not need to be fed separately, but its stocking amount is determined according to the number of small miscellaneous fish, shrimp, snails and other bait organisms in the pond; at the same time, it is necessary to take into account the number of fish with similar feeding habits such as common carp, crucian carp and tilapia; it also depends on the design yield of a culture model with silver carp and bighead carp as the main culture, which has a design yield of 400,600kg. Therefore, in the free-range Pelteobagrus fulvidraco, the number of summer flower fish (about 2cm) is different from that of winter fillet (about 8cm). Usually, when there is a part of common carp and crucian carp, there are 200 million yellow catfish with summer flowers of 2 cm and 200 fish per mu, and about 150 fish with 5 centimeters and 6 centimeters per mu; when there are no omnivorous species such as carp and crucian carp, the stocking amount of Pelteobagrus fulvidraco can be increased to 0.5 times that mentioned above. When the winter fillet of Pelteobagrus fulvidraco was released, 50,150 fish per mu were released.

two。 In the herbivorous fish model, the feeding habits of Pelteobagrus fulvidraco grass carp, snout bream and bream are aquatic plants, some terrestrial grasses and artificial compound feed, which is usually called herbivorous fish. Generally speaking, in the herbivorous culture model, the supporting fish include filter-feeding fish such as silver carp and bighead carp living in the upper water body, omnivorous fish carp and crucian carp living at the bottom, and a small number of carnivorous fish such as mandarin fish, mullet and herring. The characteristic of the stocking mode based on herbivorous fish is that the fish in the pond is mainly herbivorous, there are more leftover bait and residual feed in the pond, and there are also a lot of undigested nutrients in the feces of eating fish, which can provide rich feed for Pelteobagrus fulvidraco. In addition, when the design and production effect is high yield and high efficiency, there must be an aerator and other fishing machine equipment, which creates a good atmosphere for the living environment of Pelteobagrus fulvidraco. In the herbivorous mode, the number of Pelteobagrus fulvidraco in captive culture can be larger than that in filter feeding mode. Generally, there are 350 to 450 Pelteobagrus fulvidraco in summer and about 100 in winter fillet per mu, which refers to when there are a small number of omnivorous fish. Strictly speaking, when designing the captive culture of Pelteobagrus fulvidraco, we should not consider the stocking of common carp, crucian carp and tilapia, or a little less, so that the stocking of Pelteobagrus fulvidraco species can be appropriately considered.

3. The mode of culturing Pelteobagrus fulvidraco with carnivorous fish as the main culture mode, such as black catfish, mandarin fish, mandarin fish and sea bass, takes larger aquatic animals (such as fish, shrimp, snails, etc.) as the main food, which is called carnivorous fish. At present, this breeding model is not carried out very widely, and the region is also limited. Its breeding fish include silver carp, bighead carp, grass carp, snout, bream and so on. Considering that black mullet and mandarin live in the middle or lower layer of the water, and there is no contradiction with Pelteobagrus fulvidraco in feeding habits, we can raise Pelteobagrus fulvidraco to make use of the residual bait in the water and the small fish and shrimps that can not be used in the main culture fish. However, considering that the main fish culture may accidentally eat Pelteobagrus fulvidraco, Pelteobagrus fulvidraco should be stocked with winter fillet, so that it can rely on its hard 3 thorns (2 chest thorns and 1 back thorn) to protect itself. The stocking density is about 150 winter fillet fry per mu. It has been suggested that summer flower fish can be released, with 500 fish per mu and 600 fish per mu, and the stocking time is 10 to 12 cm, that is, the main fish are dependent on artificial formula feed before releasing Pelteobagrus fulvidraco. The effect needs to be further explored.

4. Pelteobagrus fulvidraco carp, crucian carp and tilapia are raised in the mode of omnivorous fish, which are called omnivorous fish because of their wide feeding range and miscellaneous feeding habits. The feeding habits of these fish are similar to those of Pelteobagrus fulvidraco and have certain contradictions. The summer flower species of Pelteobagrus fulvidraco can be released only when there is enough feed in the pond. Of course, in theory, raising Pelteobagrus fulvidraco with winter fillet will not be a big problem, so the species are large and have three hard spines to protect themselves. Generally speaking, there are about 300 Pelteobagrus fulvidraco in summer and 50 to 80 Pelteobagrus fulvidraco in winter.

5. The feeding habits of freshwater pearl clams of Pelteobagrus fulvidraco in the pearl-fish model are also filtered. in the pearl-fish model, silver carp and bighead carp living in the upper layer of the water body are similar, so a few of them are released. Herbivorous fish can be used as the main culture fish in this model, and their feeding habits are not compatible with those of pearl mussels. Pelteobagrus fulvidraco can get better benefits in this model. Generally speaking, when stocking Pelteobagrus fulvidraco in this mode, consideration can be given to reducing or not releasing other omnivorous fish. The stocking density of Pelteobagrus fulvidraco is the same as that of filter-feeding fish.

6. The feeding habits of Pelteobagrus fulvidraco with river crab as the main culture model are omnivorous with animal as the main food and the living water layer as the bottom, which contradicts with Pelteobagrus fulvidraco. However, practice has preliminarily proved that better benefits can be obtained by interculturing Pelteobagrus fulvidraco in river crab ponds. It is mainly because the river crab takes snail clam as the main food in the pond, and it can also make good use of artificial compound feed, and the river crab is less bold and easy to be frightened. Under the threat of chest thorns and back spines of Pelteobagrus fulvidraco, river crabs generally do not eat Pelteobagrus fulvidraco, which has been fully proved in the stomach food anatomy of river crabs for many years.