Preliminary results of trial Culture of Hybrid Black Fish in Nanhu District, Jiaxing City, Zhejiang Province

In July last year, Nanhu District of Jiaxing City, Zhejiang Province introduced 65,000 hybrid snakeheads from Hangzhou City Academy of Agricultural Sciences and put them into 10 mu pond of Weixiang Aquaculture Professional Cooperative. After half a year's trial cultivation, these hybrid snakeheads have grown from 6-7 cm/tail to an average specification of 0.5 kg/tail, and the largest one has reached 1 kg/tail. The survival rate has reached 70%. The experiment has achieved preliminary success and mastered its breeding technology.

in that culture proces, after the size difference among individual fish is obvious, the fish are cultured in two stages, when the fish size difference is about 0.25 kg/tail and 0.4 kg/tail respectively, special puf pellet feed for the hybrid snakehead is used as feed, the fish are fed three times a day, water is splashed and knocked before feeding, and fish groups are attracted to gather and snatch food. Water quality regulation: planting aquatic plants on 1/5 of the water surface in the pond to regulate water quality and provide shade for fish, sterilizing the pond every 30 days, injecting new water every 10- 1/5 days, and changing water according to actual water quality. In recent years, the conventional culture of snakehead is faced with the problems of non-point source pollution, germplasm degradation and product safety. Compared with the conventional culture of snakehead, hybrid snakehead has the advantages of strong disease resistance, eating pellet feed and greatly reducing water exchange. Now hybrid snakehead has been successfully cultivated in our region and has a good market prospect.