Silver arowana is a high-end tropical fish, especially the red-eye silver dragon.
1, seed preparation
In the case of low temperatures, doors and windows should be closed, appropriate heating, regulate the temperature of the fish species to 28 °C. Choose a fish tank, the general diameter of 126 cm, 48 cm deep fish tank can be reared 300 fish, filter cotton, activated carbon, coral stone, air pump and water pump, control the tank water depth of 20 cm, thermostat to 28 °C; at the same time ready for water temperature 25 °C, containing 1% salt, nitrofurazone 2 mg / kg of fresh water amount.
2, into the cylinder into the seedlings
Quickly return the fry to the farm. Immediately after arrival, the fry is added to the site and a suitable amount of new water is added to disinfect and sterilize. The dead fish are removed and repacked with oxygen. After half an hour of observation, the fish package is placed in the fish tank to adjust the temperature. Open the fish pack and put the fish into the tank.
3, feeding and feeding
The newly introduced small silver arowana seedling has a small yolk sac in its body and is mainly yolk-nutrified. After 7 days, the yolk sac disappears. From the 2nd day onwards, it is necessary to start taming to meet its nutritional needs. Tame to eat live bloodworms (first 3% salt, 5 g / l nitrofurazone bath after bathing for 15 minutes and then feed), the operation should be very careful, the amount of feeding to finish eating in 20 minutes.
4, suitable for variable materials
Small silver arowana seedlings are mainly fed with live bloodworms within 10 days of age. After 10 days of age, they can be fed with quick-frozen blood worms. The third month gradually transitions to shrimps (seawater and freshwater shrimps can be removed, cut into the appropriate size after removing the head and tail). , rinse with saline and feed.) Feeding times and times: Feeding 5 times daily from 5am to 10pm in the first month, 4th in the 2nd month, 3rd in the 3rd month and 2nd in the 4th month. Note that after 20 minutes of feeding each meal, remove the remaining residue bait.
5, adjust the density
Silver arowana has a rapid growth rate, and its body length is about 6 to 7 cm when it enters the seedlings. It can grow to 12 cm at 1 month, 17 cm at 2 months, and 24 cm at 3 months. Therefore, in the process of its growth, the stocking density must be adjusted in time according to the growth conditions, and it is better to screen once every one month. For the first time, 150 fishes were stocked per tank, the second was 70 fishes per tank, the third was 25 fishes per tank, and the number of stocking was gradually reduced afterwards, or they were moved into large tanks for rearing.
6, water management
The suitable water level in the Yinlong Aquarium is 20 cm for 1 month, 25 cm for 2 months, 30 cm for 3 months and 35-40 cm for later. Depending on the condition of the water quality, the sewage is sucked once every 3 to 5 days in the first month (by removing the dirt from the bottom of the cylinder), and the sewage is sucked once a day in the second month. Each time the suction is less than 5 cm. Clean filter cotton, activated carbon, etc. once every 5 to 7 days. Throughout the feeding process, the pH, dissolved oxygen, temperature, etc. of the water must be strictly controlled. The pH was 6.8-7.2, dissolved oxygen was 7 mg/l, and the temperature was 28°C. Once unsatisfactory changes have been discovered, appropriate measures should be taken immediately for adjustment.
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