Method for breeding or odontobutis obscurus

Abstract

The invention discloses a method for breeding odontobutis obscurus. The method comprises the following steps: firstly, performing parent breeding of the odontobutis obscurus with freshwater shrimp and pseudorasbora parva as baits; secondly, selecting mixture of chorionic gonadotropin, an luteinizing hormone-releasing hormone analogue and maleic acid European ketone as an oxytocic, matching female odontobutis obscurus with male odontobutis obscurus according to the ratio of 1:1.2 and placing the matched odontobutis obscurus into a spawning pond; thirdly, controlling the water temperature for spawning at 19-21DEG C, placing (n+2) spawning nests in the spawning pond, wherein n is the number of the female odontobutis obscurus; fourthly, after spawning, taking meshes to which fish roes are attached from the spawning nests, lapping the meshes on PVC (Polyvinyl Chloride) incubating tubes, enabling each mesh to correspond to one air stone, and transferring the meshes to an incubating frame for continuously incubating in two days before the fish roes break through membranes until incubating fries; fifthly, continuously culturing for one week with living food of daphnia pulex larvae and moina as initial feed. According to the method disclosed by the invention, the fertilization rate, the hatching rate and fry survival rate of the odontobutis obscurus are improved.

Description

technical field [0001] The invention relates to a fish breeding method, in particular to a sand pond snakehead breeding method. Background technique [0002] Sand pond snakehead is a small species of bottom economic fish with high commercial and nutritional value. It mainly feeds on shrimp and various small fish. It can ingest wheat ear fish that is more than 1 / 2 of its body length and digest it piece by piece. To eat, digest the head first. The oviposition of the sand pond snakehead is sessile eggs (sticky and sinking), and the oviposition substrates are generally bricks, stones, earthen pots, river mussel shells, nets, and water peanut roots, and even plastic paper, which show resistance to Certain adaptability to the corresponding environment. In the wild environment, the male and female snakeheads are paired 1:1 to lay eggs. The eggs laid are dense and even, neatly arranged, and light yellow; the egg masses are generally small, about the size of the palm; after giving ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of the low fertilization rate, hatching rate and fry survival rate of sandfish, the invention provides a sandfish breeding method

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