Three methods of fishing natural eel seedlings
There are three main fishing methods:
1. Zhang net
The net is in the shape of a trumpet tube, with a general length of 9 meters and a perimeter of 6 meters. It can be woven with polyethylene thread. The net port gradually shrinks from the net port to the back end, and the end of the net port is connected with a floating seedling collecting box. Set seedling box mesh 50-60 mesh. Zhang Wang should be set on the beach far away from the sluice to collect eel seedlings with the trend. It can be caught at high tide and low tide. Two people work, one rowed a small boat, and the other lifted the seedling box regularly with a small white porcelain basin, scooped out the eel seedlings and put them into the seedling box. This fishing method is more convenient to operate, two people can manage 5 to 6 nets, can work four times a day and night, each net can produce about 1 kg of eel seedlings, and the survival rate is also high.
2. Pull the net
When in use, spread the net near the sluice, and prepare a small fishing net with a long handle. When the net is close to leaving the water, use the small fishing net to pick up the eel seedlings in the net bag and put them into a small bamboo basket with linen cloth. This kind of net has the advantages of convenient use, high yield, less miscellaneous fish in eel seedlings, good seedling quality and high survival rate.
3. Light trapping
The eel seedlings have phototaxis at night, and the lamp is hung under the board net pole at night to induce the eel. You can also lure the eel seedlings together with a lamp and pick them up with a hand-copied net. This kind of seedling collection and survival rate are higher.
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What are the fish's requirements for water temperature?
The mud carp has higher requirements for the water temperature of the living environment. The optimum temperature for reproduction is 26~30℃, and the optimum temperature for feeding is 14.6~29.4℃. Too high or too low water temperature will reduce the feeding intensity. The cold resistance of mud carp is poor, and a large number of them die when the water temperature drops to 6~7℃. Therefore, the culture of mud carp should take winter heat preservation measures, and the area of culture of mud carp is limited by temperature.
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Prime time for mixed culture of aconite
Most of the farmers in Chaoshan, Shenzhen, Dongguan and other places in our province can get better economic benefits if they mix the four big domestic fish and tilapia with aconite in freshwater fish ponds. Mixed culture of aconite in domestic fish ponds has less investment and high profit, so it is worth trying to raise four major domestic fish and tilapia. Aconite (scientific name mullet), mainly produced in the southeast coast of China, has a wide adaptability. It can not only live in sea water, but also be cultured in a completely fresh water environment through desalination. Its fry are fished artificially.
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