A kind of method of controlling the early multiplication of sand pond snakehead in rivers

Abstract

The invention discloses a method for controlling early-bred of odontobutis potamophila. The method comprises the following steps: screening parent fishes, and controlling water temperature during a parent fish rearing process, so that the gonad development of the odontobutis potamophila is promoted; and meanwhile, carrying out enriching broodstock through feeding live food such as pseudorasbora parva and freshwater shrimp, and setting an artificial spawning nest, so that the gonad maturity in advance of the odontobutis potamophila is promoted, the breeding cycle is shortened, and odontobutis potamophila spawning and hatch equipment is recycled. In addition, odontobutis potamophila fries (sold on February) early bred through the method is at least more than three months than fries (sold on May-June) bred normally, so that the fish growth cycle can be prolonged, and the economic benefit of fishes is increased.

Description

technical field

[0001] The invention relates to a technology for controlling the early reproduction of fish, in particular to a method for controlling the early reproduction of the river sand pond snakehead, which belongs to the field of aquaculture. Background technique

[0002] Odontobutis potamophila belongs to Perciformes, Gobioidei, Odontobutidae, Odontobutis, and is widely distributed in the middle and lower reaches of the Yangtze River and Huaihe River in my country. , Qiantang River, Minjiang River and Pearl River and other water systems are small freshwater benthic carnivorous fish in my country. In recent years, due to the continuous deterioration of the living environment and the repeated destruction of the spawning environment, the wild resources of Channaca chinensis have declined sharply, and it is difficult to find traces in some areas. At present, the fish is mainly supplied to the market by fishing, but it is far from meeting the demand. Some domestic insti...