Method for improving mating rate of black rockfish parent fish under condition of industrial aquaculture

Abstract

The invention relates to a method for improving the mating rate of black rockfish parent fish under the condition of industrial aquaculture and belongs to the field of fish reproduction. The method is characterized by comprising the following steps: a, selecting parent fish; b, establishing an indoor culture pond; c, stocking the parent fish, d, controlling water source and water temperature; e, controlling water quality; f, choosing and feeding bait; g, controlling lighting; and h, managing during mating period. By controlling lighting, water temperature change and bait feeding, the method can improve the mating rate of the black rockfish parent fish under indoor environment, thereby obtaining successful mating parent fish which can produce black rockfish seedlings in batch. By adoption of the method, the indoor mating rate of the black rockfish parent fish can reach more than 95%, and meanwhile, the black rockfish parent fish which is reproducing indoors can be repeatedly used, so that wild resources are effectively protected, the quality of the black rockfish parent fish is increased, a foundation is laid for obtaining high-quality fish seedlings, and the method of indoor artificial reproduction of the black rockfish is innovated.

Description

technical field

[0001] The invention belongs to the field of fish breeding, and in particular relates to a method for increasing the mating rate of black carp broodstock under industrial culture conditions. Background technique

[0002] Xu's scorpionfish, also known as black scorpionfish, belongs to Scorpiomorpha, Scorpionidae, and scorpion genus. It is a cold-temperate offshore bottom fish. It is oviparous and has a small migration range. It is widely distributed in the Yellow Sea and the East China Sea. It has the advantages of wide temperature range, strong adaptability, and less disease. It is an ideal species for artificial fish reefs for resource multiplication and cage culture, and has become an important cultured species along the coast of northern China. However, due to the special breeding method of Xu's flat scorpionfish, its seed breeding technology level is not high, far below the breeding technology level of other cultured fish. Although the artificial breedin...