Spring Ornamental Fish Breeding Management Techniques
Spring comes back to earth and everything recovers. A variety of colorful ornamental fish also recover as the temperature rises gradually. At this time, we must pay close attention to the fish’s feeding, activities, mating, spawning, hatching, and growth and development of larvae so as to lay a good breeding ground for ornamental fish. basis. The management of spring ornamental fish farming should focus on the following work:
1, rational use of broodstock to speed up the number of water changes, the exchange of water is generally controlled once a week to increase the oxygen content of water. For the broodstock used to lay eggs, it must be raised in green water before feeding, daily live baits should be fed to avoid or reduce the external factors to stimulate the sex glands in the green water to reach saturation. When there is a chase or mating activity after dawn or after sunrise, water change stimulation is used. It is best to swap the broodstock that is about to spawn into the clear water pool in the afternoon of the same day, and see the broodstock lay eggs in the pool the next morning.
2, after the spawning water quality treatment of broodstock spawned water should pay attention to observation, if the water was milky or have stench smell, should be completely replaced in the afternoon, or withdraw raw water, inject equal amount of fresh water, to ensure that the fish Stay safe overnight. If new fishes stimulate the fish to re-occupy ovulation, it is necessary to make a second thorough water change. If spawning activities still occur on the third day, the water can be reused to stabilize the water quality. The temperature difference between water change and water addition should not be greater than 1°C. This is very important for spawning broodstock to avoid water quality stimulation and ensure robustness. Mechanical oxygen can be added when conditions permit.
3, postpartum broodstock care postpartum broodstock is extremely weak, frequent new water stimulation will make the ornamental fish spirit sluggish, foraging activities significantly reduced, dark dull, easy to get white spot disease, skin congestion or cold and other diseases . If observation is not handled in time and the disease spreads, a large number of ornamental fish will die. Therefore, postpartum broodstock should be raised in green water, or add some green water in clean water. In order to stabilize the libido of the ornamental fish, the light should be strengthened, or the male and female cylinders should be raised. At this time, the ornamental fish with immature gonadal development should be increased in nutrient deployment and placed in the clear and green water bodies for fostering. When the sex is mature, the first change of water will be performed to stimulate fish spawning. Postpartum is still suitable for rearing according to the above method.
4. During the oviposition of aquarium fish, male and female gonads have poorly developed gonadal development; especially if the abdomen is full of goldfish, it is necessary to strengthen the nursing care of live leeches so that the stunted eggs mature as soon as possible. In spawning activities, the broodstock concentrates on mating activities. The appetite is greatly reduced and the time of foraging is short. According to this rule, the amount of bait should be 1/3 to 1/5 of the normal amount, and it is better to eat within 15 to 30 minutes. The feeding of postpartum broodstock began with less feeding, and the appetite of the broodstock was tested, and the broodstock with good appetite had to be fed with fewer meals. By observing the trial feeding, proper feeding can be performed.
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