Mary fish will regenerate after birth for about one month, and their reproduction frequency is not too high. Under normal breeding, they also need 30-40 days to reproduce once. Because they are oviparous fish, it takes about 35 days from fertilization to production. Although Mary fish can continue to be fertilized and pregnant after birth, it is not recommended that breeders let them give birth again immediately. Because they consume a lot of physical strength and energy when they give birth, it is best for breeders to let them recover for another month or so, so it is best to wait for another month after they give birth, so that they have enough rest and recovery time.

1. Water temperature: The newborn Mary fish larvae are not adaptable to the environment, so breeders need to keep the water temperature between 24-28 ℃. It is best to install a heating rod to keep the water temperature constant and avoid temperature difference.

2. Water quality: Small fish are just born, so breeders should try not to change water for them. Because the fluctuation of water quality will also affect their growth and development, breeders can install a filter to slow down the deterioration of water quality. But the filter should not be opened too large, otherwise the young fish may be sucked away.

3. Feeding: There is not much food for small fish larvae. Breeders can feed them some good-year shrimp eggs, backwater, paramecium, cooked egg yolk and other foods. These foods are rich in nutrients and easy to digest, so they are suitable for feeding small fish.