Fingerling pond appropriate for multistage culture of sturgeons

Abstract

The invention discloses a fingerling pond appropriate for multistage culture of sturgeons. The fingerling pond comprises a first-stage pond, a second-stage pond, a third-stage pond and a fourth-stage pond, which communicate with one another sequentially along the water flow direction, wherein the pond depth of the first-stage, second-stage, third-stage and fourth-stage ponds increases gradually, each fingerling pond comprises a pond bottom, a drainage port and pond walls, and escape preventing meshes are arranged at the drainage ports; a water inlet groove is formed around the periphery of the pond walls, water inlets are formed between the water inlet groove and the pond walls, the vertical height difference between every two adjacent pond bottoms is 20-30cm, a step is arranged between every two adjacent pond bottoms, embankments are arranged at the upper part of each step, and each removable intercepting mesh is arranged between the two corresponding embankments; a sewage discharge outlet is formed in the fourth-stage pond, and a bar grate is arranged at the discharge outlet; and the minimum height of the pond walls is 1m. According to the fingerling pond, the four fingerling ponds, which communicate with one another and are inconsistent in water depth, are used for feeding the sturgeons so as to meet the requirements of fingerlings of different stages on water level, and thus, the pond transferring for the sturgeons is convenient and fast; and feed in the fingerling ponds of upper layers can flow into the fingerling ponds of lower layers so as to feed the sturgeons, meanwhile, the wasting of the feed is avoided, and the difficulty of cleaning is lowered.

Description

technical field [0001] The invention relates to a container for fish culture, in particular to a fingerling pond suitable for multi-stage sturgeon culture. Background technique [0002] Sturgeon is the largest, long-lived and oldest fish in the world's existing freshwater fish. It has a history of more than 200 million years and is called "living fossil in water". It belongs to freshwater fish species and is a precious aquatic product. It generally lives in flowing water and can survive in water of 1~30°C. It has high requirements for dissolved oxygen in the water body. Habits of low light, likes clear water quality, inhabits the bottom of the river with gravel bottom, and likes to swim against the bottom. Sturgeons go through 4 stages from larvae to adult fish, namely larvae, juveniles, 1-2 years old fish and adult fish. Generally, the breeding of commercial fish must first go through the juvenile stage, also known as the fingerling stage. The length of the fish is betwee...

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a fish finger pond to solve the problem that the prior art sturgeon fish finger pond cannot meet the water level requirements of multi-stage fish finger cultivation, and the feeding bait cannot be fully utilized, which increases the difficulty of cleaning for farmers

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