How do goldfish reproduce small fish and when do their eggs hatch

Goldfish are oviparous and are fertilized and hatched in vitro. Goldfish usually breed in spring. Before breeding, the female's abdomen will become larger and her personality will become more irritable. There are several small white spots on both sides of the male's front fin, especially when the female is about to spawn. When the female and male fish chase each other, they lay eggs. After the female lays eggs, the male fish will discharge sperm, and the eggs will be fertilized and hatched in the water.

1. How to breed goldfish

? Goldfish usually begin to breed from March to May. As long as the water temperature can reach above 18 C, they will breed. During the breeding season, the abdomen of female fish will become larger and larger, and the temperament will be more impatient. Male fish will have small white spots on their front fins, which are not easy to find without careful observation. These small white spots are similar to white spot disease, and breeders need to judge carefully. The

female and the male chase each other when they spawn, during which time they may spawn, and the male discharges sperm immediately after the female spawns. The eggs will hatch in about 3 days after fertilization. During the incubation period, the breeder needs to fish out the unfertilized eggs in time to avoid polluting the water quality.

2. When goldfish eggs hatch

is closely related to the water temperature. If the water temperature is 15-20 ℃, it takes 5-7 days to hatch. If the water temperature is 20-25 C, the incubation time will be reduced, only about 3 days. Therefore, the hatching of goldfish eggs is closely related to the water temperature. During the hatching of goldfish, the breeder needs to keep the water temperature constant. Excessive temperature difference will affect the hatching rate of goldfish eggs. When hatching, the filter should be turned off, because the filter is easy to suck the eggs away. But during the incubation period, the oxygen pump should be turned on, because goldfish need more oxygen to hatch.