First of all, it can be judged by their body size. The male fish is larger and the female fish is smaller. You can also look at their appearance. The forehead of the male fish is protruding while that of the female fish is smooth; the end of the dorsal fin of the male fish looks sharper, while that of the female fish is rounder; the genitals of the female fish are longer, while those of the male fish are smaller. You can also look at their colors. The colors of male fish are duller, while the colors of female fish are brighter. During the breeding season, you can also look at their abdomens. The ones with larger bellies are female fish. 1. How to distinguish male and female discus angelfish

1. Body shape: First of all, distinguishing male and female discus angelfish can start from the body shape. However, it is generally impossible to tell the difference between juvenile fish stages. Adult discus angelfish can be judged by their size. In comparison, male fish are larger, while female fish are smaller.

2. Appearance: You can also judge from their appearance, which is sometimes obvious. The first is their forehead. If it is more prominent, it is a male fish; if it is smoother, it is a female fish. There are also their dorsal fins. The dorsal fin of the male fish looks pointed, while the dorsal fin of the female fish is round. There is also the shape of their genitals. Female fish’s genitals are relatively long and tubular in shape, while male fish’s genitals are small and semicircular.

3. Color: You can also judge by their color. Unlike other fish, the color of the female discus angelfish is quite different, but the color of the male fish is darker, which is exactly the opposite of other fish.

4. Breeding period: In addition, if they happen to be in the breeding period, it will be easier. You can watch their behavior and abdomen. The female fish has a more swollen abdomen, while the male fish will chase the female fish. 2. Can male and female discus angelfish be kept together?

Generally speaking, male and female discus angelfish can be kept together. There will be no harm and generally they 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, and the males and females can only be mixed together. If adult male and female discus angelfish are mixed together, enough food needs to be provided to avoid competition for food.