Cross breeding method for river odontobutis obscurus and marbled sand gobies

Abstract

The invention discloses a cross breeding method for river odontobutis obscurus and marbled sand gobies. The method includes the steps of parent fish selection, adoption of an artificial spawning method, incubation of germ cells through sterilization washing, incubation water selection, fry breeding, later-period stocking and standard fry breeding and cultivating, and the method has scientific and practical operating value. The method is low in comprehensive cost, it is hopeful that a new species which can adapt to a wide breeding temperature range and is high in growth speed is bred, updating of breed species of odontobutis obscurus in Yangtze river basin region in China can be facilitated, and breedinf economic benefits of the odontobutis obscurus can be effectively improved.

Description

technical field [0001] The invention relates to a method for distant hybridization of fish, in particular to a method for cross breeding of fishes from different families of river snakehead and cloud-spotted snakehead, and belongs to the technical field of aquatic animal hybrid breeding. Background technique [0002] Odontobutis potamophila belongs to Perciformes, Gobioidei, Odontobutidae, odontobutis, commonly known as pond snakehead. A relatively rare small economic fish. It is mainly distributed in the middle and lower reaches of the Yangtze River and various tributaries along the river, the Minjiang River system, the Qiantang River system, and occasionally the Yellow River system. Because of its tender meat, delicious taste and few spines, the river snakehead is deeply loved by people in Jiangsu, Zhejiang, Shanghai, Fujian and other places. [0003] Oxyeleotris marmoratus (Oxyeleotris marmoratus), commonly known as Thai bamboo shoot shell fish (Marble goby), belongs to...

AI Technical Summary

Problems solved by technology

[0004] The river sand pond snakehead adapts to the growth of the natural environment in the Yangtze River Basin of my country, but the individual is small, with a weight of only about 50-80 grams per tail at one age, and the average weight of many years of growth is 100-150 g per tail, and it is extremely rare to weigh more than 200 grams. It is a small freshwater economic fish with low yield per mu

Channa is a high-quality freshwater and warm-water fish in tropical and subtropical regions. Under suitable temperature conditions, the first-year-old body weight can reach about 500g / tail, and the weight of years-old growth can reach 5-6kg / tail. It is a medium-sized fish. However, due to the limitation of natural climate and temperature conditions, it cannot adapt to the cultivation under the natural conditions of the Yangtze River Basin in my country.