Middle and later period cultivation method for odontobutis obscura fries

Abstract

The invention relates to a middle and later period cultivation method for odontobutis obscura fries. Fries cultivated in the initial period are put into a pond to breed directly, and the fries cannot bear water flow impact and other trash fish attack in the large pond environment and forage difficultly, so that the survival rate is low. According to the method, the pries in the initial period are fed for 3 weeks to 4 weeks in an indoor pond and then put in an outdoor pond to be fed. A sunlight greenhouse is arranged on the outside of the indoor pond, and an oxygenation device, a water tank and a water changing device are arranged in the pond. Specific feed is fed simultaneously, and the fries are then put in the outdoor pond to be fed till the fries are about 22mm long and are put in a large pond to breed, accordingly, the survival rate of the odontobutis obscura fries is greatly improved. The method has the advantage of being scientific in feeding method, high in feeding survival rate, capable of selecting feeding environments easily and the like.

Description

technical field [0001] The invention relates to a method for cultivating fish fries, in particular to a method for cultivating sand pond snakehead fry, in particular to a method for cultivating middle and late stage seedlings of sand pond snakehead, which belongs to the freshwater culture technology. Background technique [0002] Commonly known as "Hutousha", it is a small benthic ferocious fish in fresh water. It feeds on small fish, shrimp and plankton in the water. It usually likes to lurk on the surface of solid objects in the water. It is often found in docks, On the surface of hard objects in water such as bridge piles and gates, they usually prey in clear water areas. Every spring, they like to build nests and lay eggs in the crevices of debris in the water. However, due to the pollution of the gullies, rivers and ponds in the natural environment, the water quality has deteriorated. In addition, people use tap water, which leads to fewer and fewer riverside piers, whi...

AI Technical Summary

Problems solved by technology

[0003] In order to meet the market demand, artificial hatching and cultivation of Channa sinensis has been successful. However, the seedlings of Channa namas cultivated by artificial hatching are only 1-3mm in size, and it is difficult to eat at the initial stage of moulding. The impact of water flow in the large environment of the pond and the attack of other miscellaneous fish, coupled with its difficulty in foraging, has a low survival rate, which affects the realization of its economic value.

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