1. Body type: First of all, you can distinguish the male and female of the colored angelfish from the body type. However, the juvenile stage is generally no way to distinguish, the adult colorful angelfish can be judged from the size. By comparison, the male fish is larger and the female fish is smaller.
2. Appearance: It can also be judged from their appearance, which is sometimes obvious. The first is their forehead, if more prominent, then the male fish; If it is smooth, it is a female fish. And their dorsal fins, which look sharp in males and round in females. And the shape of their genitals, female fish genital length is relatively long, and the shape is tubular, male fish genital is very small, is semicircular.
3. Color: You can also judge by their color. Unlike other fish, the color of the female angelfish is more obvious, but the color of the male is more dim, that is, the opposite of other fish.
4, breeding season: In addition, if they happen to be in the breeding season, then it is easier, you can see their behavior and abdomen. The female fish has a larger abdomen, while the male fish will chase the female fish.
Seven-color angelfish male and female can generally be mixed in a piece, there will be no harm, generally speaking, will not fight. Moreover, their habits and characteristics are basically the same, and it is easy to control the surrounding environmental factors. Moreover, in the juvenile stage, it is generally impossible to distinguish between male and female, only male and female can be placed in a mixed culture. If adult angelfish are mixed with male and female, enough food should be provided to avoid the phenomenon of food grabbing.