1. Inappropriate allocation of male and female: Under normal circumstances, 1 male and 4 females are the most appropriate breeding ratio. If there are too many male fish, it may affect the pregnant female fish; Too many female fish will cause male and female fatigue, resulting in the inability to produce small fish.
2. Poor water quality or inappropriate water temperature: poor water quality will affect the mental state of the fish and the physical condition of the fish itself. If the temperature of the water is too high or too low, it will also affect its body function, resulting in no small fish.
3. The female is in a reproductive rest period: she will give birth 22 to 25 times a year, but she will need to adjust for a longer period of time when she has completed 11 times of reproduction, and then begin ovulation after rest. During this period, no small fish can be produced.
4. No sexual maturity: guppies need another 30 days after birth to reach sexual maturity, in this 30 days, is unable to reproduce.
5. Males are too old or impotent: If the male is too old, then its body functions are very poor, it can not complete the mating with the female. Congenital malformation or acquired damage to the male fish impotence, its reproductive system is destroyed, loss of reproductive capacity, so can not give birth to small fish.
1. Keep the water quality stable: When feeding the fish every day, pay attention to its action, which can be used to judge whether it is time to change the water, generally 7 to 10 days for a water change is the most appropriate. When changing water, it is better to mix boiled water and tap water fully, and the temperature of water should be the same as that of the original feeding tank, 22 to 24 degrees is the best. Water can be added to "water quality stabilizer" to help with tap water use. The water quality and temperature are up to standard, which is conducive to reproduction.
2. Careful cultivation and selection of fry: just under the fry feeding at least 2 times a day, mainly to feed brine shrimp larvae. It is important to exclude deformed fry, and the survival of the fittest is to continue the perfect individual. One male fish and four female fish with obvious characteristics and their own preference were moved to a new tank and carefully raised. The use of carefully bred and selected fry makes it easier to reproduce.
