Fish wintering aquaculture net cage and method for wintering aquacultured Nibea albiflora by utilizing net cage

Abstract

The invention relates to a fish wintering aquaculture net cage and a method for wintering aquacultured Nibea albiflora by utilizing the net cage, and belongs to the technical field of fish aquaculture. The fish wintering aquaculture net cage comprises a canvas hood arranged all around and a rigid support provided with a canvas layer at the bottom, wherein the canvas hood is formed by connecting four sheets of canvas matched with four surfaces of the rigid support through four zippers; the area of the canvas layer is greater than that of the bottom of the rigid support; the canvas layer is of a convex cambered surface structure; the center of a convex cambered surface is connected with a discharge pipe. According to the wintering aquaculture net cage disclosed by the invention, the canvas hood can be opened and closed, when the canvas hood is closed, a relatively stable and still closed aquaculture space is formed in the net cage so as to achieve a better heat preservation effect for wintering the aquacultured Nibea albiflora, when peripheral water is polluted, a better blocking effect can also be achieved, and when the canvas hood is opened, the net cage can also be used for aquaculture in regular seasons; the fish wintering aquaculture net cage and the method are a product and an aquaculture method worthy of large-area promotion.

Description

technical field [0001] The invention belongs to the technical field of fish farming, and in particular relates to a net cage for overwintering fish and a method for cultivating croaker overwintering in the net cage. Background technique [0002] Yellow croaker belongs to the order Perciformes, the family Scrotoaceae, and the genus Yellow croaker. Its body shape is similar to that of yellow croaker. It is a middle and lower layer fish in the coastal waters. It mainly inhabits shallow coastal waters with sandy and muddy bottoms. and small fish and other benthic animals. Distributed in the Pacific Northwest, including the South China Sea, the East China Sea and the southern part of the Yellow Sea, the optimum growth water temperature is 24°C~29°C, the spawning water temperature is 24°C~28°C, the age of sexual maturity is 2 weeks, and the suitable growth salt range is 10‰~ 40‰, which is an ideal variety for multiplication and breeding in the southeast coast of my country...

AI Technical Summary

Problems solved by technology

However, indoor wintering requires personnel management and heating, which consumes a lot of energy, materials and manpower, increases the cost of breeding, and is not conducive to the promotion of the yellow croaker industry.

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