Golden pomfret is a kind of pelagic fish in warm water, which is large in size and generally does not form a large group. Swim from the offshore to the offshore in spring and summer, and then swim to the offshore deep water area in winter. Large individual 5 kg ~ 10 kg. Golden pomfret meat is tender and delicious, which is a kind of precious edible fish, but its output is not large, so it can be used as the object of mariculture. A certain number of fry can be caught in Guangdong, Guangxi and Fujian. Artificial culture in Taiwan Province and Hainan was successful, and a considerable part of it was sold back to Guangdong and Fujian for cage culture. Someone tried to hatch and raise seedlings in Huidong, Guangdong, but failed.
Golden pomfret eats a lot and digests quickly. In the case of artificial feeding, it will not stay for a long time after feeding. If it is fed with the food it likes, it will still compete fiercely. Golden pomfret grows very fast and weighs about 500 grams in half a year. According to the characteristics of extremely fast growth of golden pomfret, farmers choose to increase the feeding amount of golden pomfret in June, July and August, so as to make it grow rapidly, reach the market specifications as soon as possible, shorten its growth cycle and reduce risks.
net-cage culture
1. Sea area selection
It is very important to choose the sea area for cage culture of golden pomfret. Golden pomfret is a warm-water fish, and it is best to choose the sea area south of Huidong (including Huidong) in Guangdong. The distance from the bottom of the cage to the bottom of the sea is about 1.5 meters based on the lowest tide level, with calm wind and waves and convenient transportation.
2. Inventory specifications and density
In the breeding stage, for early harvest, fry with a body length of about 6 cm can be sold as soon as possible, and 40-50 fish can be put into each cubic meter of water. If you are not in a hurry to harvest, you can appropriately increase the breeding density.
3. Daily management
(1) There are mainly two kinds of bait, one is fresh miscellaneous fish; One is artificial compound feed. Because the golden pomfret has a small mouth, the fresh miscellaneous fish must be fresh, and the fishbone should be crushed to prevent it from being stuck in the throat and starving to death. During the period from June to August, the daily feeding amount is more than 20% of the fish weight, and it is fed twice a day. At other times, the feeding amount can be reduced appropriately according to the situation. In order to speed up the growth, the daily feeding amount can be increased to about 40% of the fish weight, and the feeding times can be increased to 3-4 times or even 5 times. Compound feed can be fed according to the instructions.
(2) Safety inspection In order to prevent fish from escaping, check the cage frequently. After the typhoon, check whether there is any net cage missing or not.
(3) Remove the attachments in the cage. If fouling organisms are attached to the cage for a period of time, it is very important to clean up (4) records and data accumulation in time, which is an important work to improve fish culture technology. Make detailed records of water temperature, salinity, fish feeding, dead fish, weather changes and fish diseases every day.
4. Disease control
Fish disease is an important factor affecting the survival rate of golden pomfret. Due to the high stocking density of cage culture, once fish get sick, cross-infection is fast, and the disease is difficult to control, which is easy to cause a large number of deaths. Prevention is more important than treatment, and prevention is particularly important. Therefore, it is necessary to do a good job of prevention and timely treatment of fish diseases.
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