Parabotia fasciata larva breeding method

Abstract

The invention provides a parabotia fasciata larva breeding method, and relates to a freshwater fish larva breeding technology. The method comprises the steps that parabotia fasciata larvae are bred in a larva breeding pool; artificial and feed domestication treatment is conducted on the larvae, water quality adjustment is conducted, breeding is conducted for 15 days, and parabotia fasciata larva fish with the body length ranging from 0.6 cm to 1.0 cm can be obtained; the fish are transferred to a fingerling breeding pool, bait is put into the fingerling breeding pool, water quality adjustment is conducted on breeding water, dissolved oxygen of the breeding water of the fingerling breeding pool is larger than 5 mg / L, the ammonia nitrogen content is smaller than 0.01 mg / L, breeding is conducted for three months, and parabotia fasciata fingerling with the body length ranging from 5 cm to 6 cm can be obtained. According to the parabotia fasciata larva breeding method, parabotia fasciata larva and fingerling breeding technical problems can be solved, batched production of the parabotia fasciata fingerling is achieved, parabotia fasciata germplasm resources are protected, the survival rate of the parabotia fasciata fingerling bred through the method reaches 80%-85%, and the fingerling survival rate reaches 60%-70%.

Description

technical field [0001] The invention relates to freshwater fish seed cultivation technology, in particular to a method for cultivating paraloach fish fry and fish fingerlings. Background technique [0002] Parabotia fasciata belongs to the order Cypriniformes, the family Cobitidae, the subfamily Botiinae, and the genus Parabotia. It is a unique fish in China. Its spawning period is from mid-to-late April to early July, and it is a one-time spawning fish. Paraloach variegata produces floating eggs, the eggs are yellow-green, and the fertilized eggs hatch at about 28°C for 12 hours. Under wild conditions, the hatching of its fry needs to be carried out in a longer river section with a higher flow rate. In recent years, due to the destruction of its breeding environment and feeding grounds due to cruel fishing, construction of water conservancy projects and sand mining operations, its distribution range has gradually shrunk, and the amount of wild resources has declined signi...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of the obvious decline in the resources of Paraloach variegata, the invention provides a method for cultivating fish fry and fingerlings of Paraloach variegata. The survival rate of the fry of Paraloach variegata cultivated by the method of the present invention reaches 80% to 85%. , the survival rate of fish species is as high as 60% to 70%.