Mary fish has many signs before giving birth to small fish, such as its belly will become bigger and bigger, in this case, it needs to be isolated in time. In addition, before production often do not love to move, like more in the corner, especially where there are aquatic plants, often hidden there for spawning. In addition, at the time of birth, the genital pores will be milky white.
1. Selection of parent fish: Mary fish can be sexually mature in half a year. At this time, male and female fish with better growth should be selected as parent fish and put into the breeding tank, so that they can complete mating inside. The ratio of male and female fish is 1:2, so as to ensure that the female fish can be fertilized.
2. Water temperature and water quality: Mary fish can tolerate the low temperature of 10 ℃ at ordinary times, but the breeding period must not be so low, otherwise it will affect the spawning of female fish, and is not conducive to the growth of larvae. The water temperature should be maintained at 25-28 ℃, the pH should be controlled at about 7.2-7.6, and the hardness should be 9-11.
3, waiting to spawn: Mary fish are ovoviviparous fish, usually in vivo fertilization, until the fertilized eggs develop into larvae, will be produced. Usually, when the abdomen of female fish is swollen and blackened, it can be fished out and raised separately to avoid the larvae being swallowed by male fish.
4. Development of young fish: Newborn young fish can swim and feed. At first, the color is dark gray, and then it will gradually turn black. Usually, male and female can be distinguished in two months.
