1. How to divide goldfish into male and female 1. Look at the body shape: If breeders want to distinguish the sex of goldfish, they can observe the body shape of goldfish. In goldfish that grow in the same environment, the male fish will be slender and appear longer. The female fish will be shorter and rounder, and its body will appear shorter.
2, Look at the tail: Breeders can also observe the tail of goldfish. Under normal circumstances, the tail of male goldfish will be thicker and that of female goldfish will appear slender.
3, look at the abdomen: The abdomen of goldfish usually does not have much difference between male and female, but when they reach adulthood, the abdomen of female goldfish will become bigger, but the abdomen of male fish will not change too much.
2. How do goldfish reproduce1. Choose parent fish: Generally, goldfish can develop and mature about one year after birth. Breeders need to select some healthy and flexible goldfish for mating. When choosing parent fish, we should also pay attention to the ratio of male to female, and it is best to control it at 1: 2 or 1: 3.
2. Prepare the breeding environment: The breeder needs to keep the water temperature between 18-25 ℃ and the PH value between 7.2-7.4. During their estrus, the breeder should also ensure that there is enough food and nutrition in the water.
3. Mating: After goldfish pair successfully, they will start to produce. They are oviparous fish. When they reproduce, the female fish discharge their eggs first, and then the male fish inseminate. After successful insemination, fish eggs become fertilized eggs.
4. Hatching: The breeder needs to fish out the eggs and put them in a separate container. After a week or so of incubation, small fish will appear. Small fish are born about 3 days ago, and breeders can try to feed food.
