Are there male and female fish? Which fish can change sex?

Fish, of course, are male and female. The female and male fish have different genitalia, the male is more pointed and the female is oval. Some fish can be distinguished by their shape, and the size and color of female and male fish are often different. In addition, some fish even have the ability to denature, such as eel, grouper, clown fish and so on, they can change sex according to the needs of the population, and some can change back.

1. Are fish male and female

Fish are male and female. The general way to distinguish them is to look at their genitals, which are thin and sharp in males and elliptical in females. In addition, some fish can also be distinguished according to their size or color, such as slender and brightly colored males and round females. During the breeding season, the abdomen of the female fish tends to expand, while the male fish remains unchanged. There are some special fish that can change sex, so that they can better reproduce with their population.

2. which fish can be denatured

1, Monopterus albus: Monopterus albus denaturation and many animals are different, it starts from the embryo, until the mature period before the female, and after the completion of spawning, the ovary will gradually degenerate, but also the formation of sperm sacs, and then slowly changed into a male, it should be noted that its deformation is unisexual. You can't change it back.

2. Grouper: The degeneration of grouper is completely different from that of eel. It can degenerate several times a day. When the fish reproduce and mate, they swap sexes so that they can produce eggs.

3. Clown fish: Clown fish can also be denatured. The fish are usually social, with a female and a number of males in each group. Usually, when the females die, one of the males becomes a female and continues to dominate the group.