. When they reproduce, the female fish lays eggs first, and after the female fish lays eggs, the male fish comes forward to ejaculate, so that the eggs can become fertilized eggs. Fertilized eggs need a period of incubation before they can become small fish. Generally, oviparous animals do not have the habit of protecting their young, and goldfish may eat their eggs after giving birth.
Viviparous animals reproduce in a different way. First of all, they are fertilized in vivo. After fertilization in vivo, the egg will develop into an embryo. The embryo needs to develop successfully in the mother's body before it can leave the mother's body. Viviparous animals produce fetuses. Viviparous animals, which breathe with their lungs and produce milk, will take care of their young until they have the ability to find food.
? Goldfish mature in 1-2 years after birth, and they will reproduce in spring every year after they grow up. When breeding, the male will chase the female constantly, and if the female accepts the male's pursuit, they will chase each other. During the chase, the female lays an egg, and the male ejaculates immediately, at which point the egg becomes a fertilized egg. After the goldfish have finished breeding, the breeder needs to fish them out as soon as possible to prevent them from eating the eggs. Fish eggs can hatch in a comfortable environment in about 3-7 days.
