How do you catch fish?
First, catch mandarin fish by net
1. Siniperca chuatsi caught by Gill net: single layer or multi-layer can be used in Gill net, but single layer is often used in actual production to reduce cost. To catch mandarin fish with Gill net, the net should be set according to different seasons and different water environment, for example, in the reservoir, the net should be placed at the edge of the reservoir where the cliff water is deeper, in the lake, the net should be placed in the water area with lush vegetation, in spring, the net should be placed in the shallow water area of the water bank, and in winter, the net should be laid in the deep water area, so that the catch rate is higher.
2. Mandarin fishing: it is generally used during harvest, and the operation method is the same as that of conventional fish. however, attention should be paid to pulling the first net and then the second net after waiting for the horizontal mandarin fish to "come out of the nest" after a period of time, in order to improve the fishing rate. Pull the net to catch mandarin fish quickly, first pick out the mandarin fish that do not meet the standard to return to the pond. In case he gets hurt. In addition, the wire quality of the mandarin fish should be soft and the mesh should be slightly larger, so that the bait fish can escape the net without being hurt.
Second, fishing for mandarin fish. In spring, summer, autumn mandarin fish activity is strong season, can use fishing rod fishing, general ordinary fishing rod can. The specific method of operation is to hook the hook to the muscle or tail fin below the dorsal fin of the small live fish, requiring the vitality of the small live fish to be strong, and use crucian carp or carp more. After the bait is installed, put it in the place where mandarin fish often appear in the pond, such as culverts, stone crevices, aquatic plants, and move slowly around at intervals to promote small live fish to keep moving in the water, in order to attract mandarin fish to hunt and be caught.
Third, the flower basket catches mandarin fish. During the breeding season, mandarin fish like to breed in pairs in places where the grass is clear. Taking advantage of this habit, the flower basket is placed in the shallow water area with water plants on the large water surface, and the flower basket is covered with water plants, so that the mandarin fish is caught by mistake into the flower basket. In order to prevent the flower basket from floating or being washed away, it is usually necessary to hang a stone on the flower basket.
Fourth, catch mandarin fish by hand. Use mandarin fish like to rely on the water edge and gather into a nest habit, the pool water down to about 50 centimeters, can be empty-handed water mandarin fish, at this time mandarin fish mostly in the pond bottom and pool slope intersection, therefore, hand catch mandarin fish usually along the edge of the pool. In order to prevent mandarin fish from getting stuck in the hand, you'd better wear gloves when working. Keep in mind that mandarin fish are more "docile" when they are not out of the water. After leaving the water, spines and thorns are easy to prick their hands. Be careful in operation. The catching rate of this method can be as high as 80%.
Fifth, catch mandarin in dry ponds. When all mandarin fish are caught, the water in the pond must be drained shallow and caught by fishing nets. The method is: first drain the pool water shallow, use the long handle to catch the sea; wait for the pool water to drain, and then use the net to catch. When catching mandarin fish in dry ponds, they should be temporarily raised in clean water and, if necessary, be equipped with flushing equipment, otherwise the mud in the gills of mandarin fish will soon be anoxic and die. In addition, when starting to catch in dry ponds, try to avoid the high temperature, or arrange to catch in the morning.
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Experience of rotational culture of Macrobrachium rosenbergii and mandarin fish
Macrobrachium rosenbergii is not tolerant to low temperature. When the water temperature drops to 15 ℃ in late autumn and early winter, it is necessary to start fishing in dry ponds in time, so that Macrobrachium rosenbergii culture ponds can only be used for half a year (from May to October). The mandarin fish does not stop feeding completely in winter and continues to grow, but only the feeding intensity and growth rate.
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Techniques of culturing mandarin fish in cage
Mandarin fish, also known as osmanthus fish, is one of the most valuable freshwater species. Cage culture of mandarin fish has the advantages of less water surface, less investment, short culture cycle, high yield, good benefit and so on. The cage culture technology of mandarin fish is introduced as follows. Water area selection: cage setting water area requirements
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