Study On Artificial Propagation Techniques Of Cultrichthys Erythropteru

Cultrichthys erythropteru is a wild fish in the rivers and lake,its'living behaviour including: Cultrichthys erythropteru is apt to inhabit in the lakes where abound in float grass,and in the tardo flow rivers。The fish have a strong adaptability ,can live in the river of high alkalescence. Have a low speed of growth. flesh-eater .Parr eat daphnia,Copepoda and aquicolous insect as main food. Grown fish eat small fish,shrimp,snail and also daphnia and aquicolous insect . Sex mature in 3 years. Reproduce between may to july. emplastic spawn. Upgrowth when adhibit to the float grass and stone. Cultrichthys erythropteru have a high nutrition valuable,there is more protein in its'musculature, Cultrichthys erythropteru have a good taste,so the fish have a high economic value.As the wild Cultrichthys erythropteru have a low ability of survival and reproduce,and also restrict by the entironment,nowadays the fish didn't form a industry, indeed,there is few in the domain of artificially reproduce. The experimentation lasts from2005 to2007.The fish used in the experiment are catched from the water system of HeiLongjiang and hulun lake.In wild condition,we hold a contrastive experiment used the hormone of HCG,LRH-A,PG,DOM which are used in the four cattle fish. Through the experiment,we found that the coefficient of mature is close contact with the temperature of the water.The genital ability of the fish is 17.8~20.5 thousands.The best combination of the hormone is LRH-A21.2μg +DOM5mg and LRH-A21.2μg +HCG1000IU+PG0.8mg.The best proportion of gender is between 3:1 to 1:1.The factors which impact to the hatch of the fish including: the temperature of the water,oxygen in the water,water quality,velocity of flow and opposed biology.