The green mackerel belongs to the multiple spawning type fish, although artificial breeding has been successful, but because of the small amount of fry, the economic value is not great. The production of fry is mainly from the natural river fry. In Hechi City, its natural spawning grounds are mainly located in the Taigou River, Xiaohuanjiang River, Diaojiang River and Buliu River, and the size of the spawning volume is Taigou River, Xiaohuanjiang River, Diaojiang River and Buliu River in the order of the size of the spawning volume.
Fishing is set up by the spawning grounds along the river fishing nets to get and artificial night to fish in the river. The specification of the fished seedling is 0.7~1.0cm, part of which is self-breeding, part of which is sold to Guangdong and Nanning, etc., and most of which is sold to local and neighboring professional seedling producers for cultivation. Generally cultivated to 3~6cm and then exported, 6~12cm mainly supply local farmers.
Hechi City, engaged in the mackerel fry loading and fishing labor force of about 3,000 to 5,000 people, the annual per capita income of 800 to 5,000 yuan fry fishing; fry cultivation households there are about 200 households, the largest annual production of mackerel fry 200,000 tails, the net income of 150,000 yuan a year. Most of the farmers engaged in the production of green mangosteen fry have made good incomes. They are distributed in Yizhou, Du'an, Luocheng, Jinchengjiang District, Huanjiang and other counties and cities, but are mainly concentrated in the townships of Huaiyuan, Lalang, Xiangbei, Luoxi, Qingyuan and Liuhe in Yizhou City. The farming methods include river net box farming and running water farming. Net box farming is the largest in Huaiyuan Township, reaching 155 boxes. To plant endive, Gui Mu 1, ryegrass and other green fodder feeding, with part of the full-value feed, feeding 2.0 ~ 2.5 years, the specifications can reach 1.0 ~ 1.5 kg. net box production of 800 ~ 1,000 kg, the output value of 4.8 ~ 120,000 yuan, the cost of farming 12 ~ 16 yuan / kg, net profit of 3.2 ~ 76,000 yuan / box.
Flow-water aquaculture is mainly distributed in Luoxi Town, Yizhou City. The specification of the pool is 60~150 square meters, mostly built in the ditch and canal, the cost is 1,000~1,300 yuan/pool, and the quantity of seed is 600~1,000 tails/pool.
Because of the culture of green mackerel technology is simple, good benefits, high profits, in Hechi City has set off the climax of the culture of green mackerel. 1、Natural resources suffered serious damage. Driven by the interests of some people in the river for electrofishing, fish frying and other illegal activities, fishery resources and fisheries ecosystem suffered serious damage, many local famous species in some sections of the river extinction phenomenon. In the Tianhe River and the lower reaches of the Longjiang River, it is difficult to find the traces of the green bamboo fish;
2. The large flow of fry outflow triggered the increased pressure of competition in the market.
3, the lack of funds, is the main problem that restricts the development of green mackerel farming. Farmer capital accumulation is extremely limited, the amount of agricultural credit is too small. Farmers farming enthusiasm is high, but suffering from the shortage of funds and feed.
4, practitioners of uneven skills, farming techniques to be standardized and improved.