1. Shape to distinguish law: the success rate: 60%

In general, the same pair of fish among the male body is relatively large, the female body is relatively small and round. So some friends like to buy fish, many will find that most of the fish are raised after the male, this is because when the fish in the election, most would choose the larger of and stalwart to buy, therefore, often do not consciously choose a male.

2. Forehead distinguish law: the success rate: 30%

Male fish are more protruding forehead, on the contrary females relatively smooth forehead. However, some species of high body very flat forehead area, separate male and female will use this method on not for you.

3. Color resolution method: the success rate: 60%

This is more obvious in the wild species, males of color in dim, the female is more colorful.

4. Dorsal end of the resolution method: Success rate: 50%

The male end more pointed dorsal fin, females are more rounded; the male end of dorsal fin would be more points.

5. Patterns to distinguish law: the success rate: 80%

This turquoise subjects would be more easily see the fish. Typically turquoise fairy head texture, if you have been extended on the top dorsal fin, with no interruption, then the majority is male, opposite the middle of interruption is female.

6. Black circles to distinguish law: Success rate: 90%

Applies only to wild species, such as Alian card, Ica, red dot green, Hegel, etc. Dorsal and anal fins of these fish on a black circle, if fairly thick and black, this is the female, the male child and the color black circle a little more light.

7. Water allocation (ie, pectoral) distinguish law: Success rate: 20%

This method is more difficult to master, but my child from a decades-old man selling fish learn about. He said the oviparous female fish, oval-shaped water allocation, the male is slightly triangular. But confirmed by the author for many years, found it difficult to see them separately.

8. Genital distinguish law: Success rate: 99%

Of course, this is the most accurate method, but the fish not yet reached estrus, genitals are not exposed, some of the solid variety, are true until the very last. Discus fish in the two ventral intermediate genitals, female genitals long and tubular, the male genitalia is very small, was semi-circular tapered, like the middle of a sore two fins. Some farmers will use the network pulled the fish in water, then squeeze the fish’s belly, hands, genitals forced to fish the fish out in vitro in order to learn gender. But I strongly discouraged this practice, because it hurt the fish and make it easy to be frightened.

9. Mating behavior to distinguish law: the success rate: 80%

A matched pair of parent fish, the mating of the first will have a series of actions, Yang first color, body vibration, and then jump god of dance, and so on. But usually will be made active female, the male is still to be induced one. When mating, the female will lay eggs first, and then will be followed and the male ejaculation.