(1) Seed preparation In the case of low temperature, doors and windows should be closed, and proper temperature should be added to regulate the temperature of the 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) Enter the tank and quickly return the fish to the farm. After the fish is on the field, add the appropriate amount of spare new water to disinfect and sterilize immediately. Remove the dead fish and re-oxygenate the package. Observe half an hour before putting the fish into the fish tank. Adjust the temperature and open the fish pack and put the fish into the tank after 1 hour.
(3) Feeding and feeding The newly introduced small silver arowana seedling has a small yolk sac, which is mainly nutrient-free. 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) In the appropriate period, the 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 shrimp (seawater and freshwater shrimps can be removed. After the head and tail cut into the appropriate size, rinse with salt water for feeding). 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) Adjusting the density The silver arowana has a faster growth rate, and its body length is about 6-7 cm when it enters the seedling. 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 timely adjusted according to the growth conditions, and it is better to screen once every one month. The first time was to stock 150 fish per tank, the second time was 70 tails per tank, and the third time was 25 tails per tank. Afterwards, the number of stockings was gradually reduced, or they were moved into large tanks for rearing.
(6) Water management The appropriate water level in Yinlong Aquarium is: 20cm for 1 month, 25cm for 2 months, 30cm for 3 months and 35-40cm for later. Depending on the water quality, the first month, every 3 to 5 days, one time of suction (absorbing dirt from the bottom of the cylinder), and the second day of daily suction of the sewage, each suction does not exceed 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.
(7) Disease prevention: There are fewer diseases in the breeding of key silver arowana in the animal husbandry industry. As long as the emphasis is on prevention, the need for veterinary medicine does not require a variety of species and it can achieve a breeding success rate of almost 100%. The method is: Silver dragon seedlings after tanking, each cylinder with 2.4 million units of gentamicin sulfate disinfection of water bodies to kill pathogens, prevent water quality deterioration and transport damage caused by infection; feeding process only weekly Need to use the appropriate amount of antibiotics (oxytetracycline, tetracycline, etc.) for prevention.
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) Enter the tank and quickly return the fish to the farm. After the fish is on the field, add the appropriate amount of spare new water to disinfect and sterilize immediately. Remove the dead fish and re-oxygenate the package. Observe half an hour before putting the fish into the fish tank. Adjust the temperature and open the fish pack and put the fish into the tank after 1 hour.
(3) Feeding and feeding The newly introduced small silver arowana seedling has a small yolk sac, which is mainly nutrient-free. 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) In the appropriate period, the 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 shrimp (seawater and freshwater shrimps can be removed. After the head and tail cut into the appropriate size, rinse with salt water for feeding). 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) Adjusting the density The silver arowana has a faster growth rate, and its body length is about 6-7 cm when it enters the seedling. 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 timely adjusted according to the growth conditions, and it is better to screen once every one month. The first time was to stock 150 fish per tank, the second time was 70 tails per tank, and the third time was 25 tails per tank. Afterwards, the number of stockings was gradually reduced, or they were moved into large tanks for rearing.
(6) Water management The appropriate water level in Yinlong Aquarium is: 20cm for 1 month, 25cm for 2 months, 30cm for 3 months and 35-40cm for later. Depending on the water quality, the first month, every 3 to 5 days, one time of suction (absorbing dirt from the bottom of the cylinder), and the second day of daily suction of the sewage, each suction does not exceed 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.
(7) Disease prevention: There are fewer diseases in the breeding of key silver arowana in the animal husbandry industry. As long as the emphasis is on prevention, the need for veterinary medicine does not require a variety of species and it can achieve a breeding success rate of almost 100%. The method is: Silver dragon seedlings after tanking, each cylinder with 2.4 million units of gentamicin sulfate disinfection of water bodies to kill pathogens, prevent water quality deterioration and transport damage caused by infection; feeding process only weekly Need to use the appropriate amount of antibiotics (oxytetracycline, tetracycline, etc.) for prevention.