? Goldfish are oviparous and fertilized in vitro, so they hatch from fish eggs into small fish. Goldfish usually begin to heat in spring. When the water temperature reaches 18-22 degrees Celsius, the male fish will chase the female fish constantly. If the female fish accepts their pursuit, the two fish will chase each other. At this time, the breeder needs to transfer them to the spawning tank, and place aquatic plants and fish nests in the tank in advance. Most goldfish lay eggs at dawn or in the early morning. Before laying eggs, the male fish will push the female fish into the water plants or fish nests. The female fish's body will shake, and then lay rows of eggs. At this time, the male fish will ejaculate immediately. After fertilization, the eggs will be scattered on the water plants. After waiting for a period of time, they can hatch into small goldfish.
small goldfish 1. Feeding: Newborn goldfish do not need to be fed within 3 days, because the lecithin they carry from the mother needs to be thoroughly absorbed, so the breeder does not need to feed immediately. After 3 days, the breeder can feed them some cooked egg yolks, shrimp eggs, etc. At this time, the amount of feeding should not be too large, but the frequency of feeding needs to be higher. It can be fed 2-3 times a day, and the amount of each feeding can be finished within 5 minutes.
2. Water temperature: Newborn goldfish are sensitive to changes in the environment. Breeders need to keep the water temperature between 18-22 ℃, and the temperature difference between morning and evening should not exceed 2 ℃.
3. Water quality: Goldfish like weak acidic water, and breeders can control the PH value between 7.0 and 8.5. The adaptability of small goldfish is poor, and the fluctuation of PH value should not exceed 0.2. Usually, the water can be changed 1-2 times a week. If conditions permit, a circulating filtration system can be installed to ensure clean water quality.
