1, fry rearing facilities. General fry temporary facilities for flowing cement pool or 40 ~ 60 mesh netting processed into the net box. Cement pool shape square, round, oval can be, the requirements of the bottom is smooth, there are inlet and outlet, the outlet should be more than 40 mesh mesh to stop, mesh box specifications for rectangular, 0.5 ~ 0.7 meters deep, mesh box must be used in the micro-flow water, in order to exchange the body of water and exclude dirt.
2, temporary culture and management measures. Fish fry temporary rearing mode mainly has flowing cement pool temporary rearing and net box temporary rearing two ways, these two ways are more adapted to mass production.
(1) Clean up the flowing cement pool, inject water depth of 0.5 meters, put the young fish with yolk sac into the cement pool, stocking 1.5 to 20,000 per cubic meter, the first 2 to 3 days only need to keep flowing to maintain sufficient dissolved oxygen can be. At this time, all the fish fry clustered around the bottom of the pool, to be almost absorbed by the fish fry nutrition and began to ingest external nutrients when the fish fry free cluster swimming, began to feed egg yolk for a day, the next day began to egg yolk and zooplankton combined feeding, zooplankton such as rotifers, branchiostomes, copepods and other live feeding is better, feeding method is a small amount of several times. In the process of cultivation, must maintain the water body has sufficient dissolved oxygen, in addition to running water using air compressor aerated to increase the oxygen in the pool.
(2) tentative net box with 40 ~ 60 mesh processed into a rectangular, first of all, the pond disinfection to remove wild fish, water depth of 0.6 ~ 0.8 m, will be fertilized to a large number of pond water zooplankton, water transparency in more than 40 centimeters, will be fixed in the net box with stakes, net box above and below the entire system is firm, in order to have a wind and waves, the net box does not shake as appropriate. The upper mouth of the net box from the level of 10 to 12 cm, such as the ability to carry out micro-flow water per square meter can be put 0.8 to 10,000 tails, no-flow net box per square meter stocking 0.3 million to 0.5 million tails, to be fish fry can swim freely when you start feeding two days of yolk slurry, to the fish fry stronger mobility, can be a normal intake of zooplankton in the water column, the upper mouth of the net box sunk in the water column below the surface of the surface of the water body of about 10 to 15 centimeters, so that the fish fry automatically leave the net box to the pool. After the net box sinks for about 1 to 2 days, the fry that are not active in the net box will be cleaned out of the net box and put into the pond. Must pay attention to maintain good water quality in the pond, the water should not be turbid, so as to avoid mud sticking to the surface of the body of the fish fry to affect the normal activities and lead to death, to maintain the water quality of the pond dissolved oxygen content of more than 5 mg / liter.
This is how to raise Pelteobagrus fulvidraco larvae, have you learned?