High-density forage fish breeding method and device

Abstract

The invention discloses a high-density forage fish breeding method and device. The method comprises the steps as follows: water area selection: a fresh water pond of 10 mu or more is selected; building of a forage fish breeding device: the forage fish breeding device is a water tank built beside or on the pond, the area of the water tank accounts for 1-5% of the area of the pond, and equipment for oxygenating a water body is arranged in the water tank; construction of a purification water tank: the pond is sequentially divided into a sedimentation tank, an aeration tank and an ecological tank, water in the ecological tank is pumped to the head end of the water tank, tail water and excrement and residual feed at the tail end of the water tank naturally flow or are pumped into the sedimentation tank, the tail water subjected to natural sedimentation automatically flows into the aeration tank through an overflow dam, the tail water subjected to aeration and oxygenation automatically flows into the ecological tank through the underflow dam, and filter-feeding fishes are stocked in the ecological tank and aquatic plants are planted in the ecological tank; putting and management of fish fries. According to the high-density forage fish breeding method and device, bionic perennial running water environment is formed, high-density forage fish breeding in a small water body is achieved, management and fishing are convenient, and safety controllability is improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, and more specifically, the invention relates to a high-density culture method and device for bait fish. Background technique [0002] Forage fish is a kind of live fish feed used to feed higher aquatic animals, usually including dace, crucian carp, roundhead bream, pomfret, carp, tilapia and other fish species or commercial fish. The number of bait fish is large, the breeding cycle is short, and the size of the bait fish is required to be suitable for feeding by higher-level fish, and it is safe and controllable. [0003] In the prior art, the devices for cultivating bait fish usually use cement and bricks to build water tanks for high-density culture of circulating water, but the existing water tanks are expensive to adjust after they are built, cannot be recycled and reused, and are difficult to meet the needs of different scales of breeding, and In the process of high-density culture, wat...

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Problems solved by technology

[0003] In the prior art, the devices for cultivating bait fish usually use cement and bricks to build water tanks for high-density culture of circulating water, but the existing water tanks are expensive to adjust after they are built, cannot be recycled and reused, and are difficult to meet the needs of different scales of breeding, and In the process of high-density breeding, water purification and breeding methods are very important for the cultivation of bait fish in the tank

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