Multilayer fish raising device

Abstract

The invention provides a multilayer fish raising device comprising a top rectangular frame, a bottom rectangular frame, upright columns and a fishing net for forming a third layer of net cage; a pairof upright columns at the left side are fixedly provided with the first frame and the second frame; the area of the second frame is larger than that of the first frame; the top of the right side of the first frame is provided with first upright rods; the top of the right side of the second frame is provided with second upright rods; a first fishing net for forming a first layer of net cage is arranged among the first frame, the top rectangular frame and the first upright rods; and a second fishing net for forming a second layer of net cage is arranged among the second frame, the top rectangular frame and the second upright rods. The plurality of layers of net cages are overlaid in a cage body, and the areas of the plurality of layers of net cages are gradually increased from top to bottom,so that the multilayer fish raising device is simple in structure and capable of raising different kinds of fishes in batches and preventing big fishes from swallowing little fishes and preventing fishes in shallow water from scrambling for food.

Description

technical field [0001] The invention relates to the technical field of fish farming equipment, in particular to a multi-layer fish farming device. Background technique [0002] China has a vast sea area and a long coastline, but it has a large population. The daily fish food needs gradually increase with the improvement of people's lives. Therefore, fish farms usually achieve the purpose of increasing production by expanding the area of ​​fish farms. However, due to expansion and The area of ​​the fish farm is relatively large and the consumption cost is relatively high. [0003] In addition, due to the competition of different species of fish and the difficulty of catching, the same species of fish is usually raised in the same fish farm. demand for farming, which leads to the fact that the same fish farm cannot be fully utilized. [0004] Therefore, how to maximize the rational use of fish farms is a technical problem to be solved in the prior art, and aquaculture is dev...

AI Technical Summary

Problems solved by technology

[0002] China has a vast sea area and a long coastline, but it has a large population. The daily fish food needs gradually increase with the improvement of people's lives. Therefore, fish farms usually achieve the purpose of increasing production by expanding the area of ​​fish farms. However, due to expansion and The area of ​​the fish farm is relatively large and the consumption cost is relatively high

[0003] In addition, due to the competition of different species of fish and the difficulty of catching, the same species of fish is usually raised in the same fish farm. demand for farming, which leads to the fact that the same fish farm cannot be fully utilized

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