1. How to raise zebrafish when they are pregnant Zebrafish will not be pregnant because they are oviparous animals and reproduce by in vitro fertilization. During reproduction, female fish ovulate first, male fish excrete sperm again, and then fish eggs become fertilized eggs. After a period of hatching, they will become small fish larvae,
So zebrafish will not get pregnant. Female zebrafish will only conceive eggs. If breeders want them to breed, they can choose to prepare several male fish and put them together in the prepared breeding fish tank, and then keep the water temperature of the breeding tank at about 26 ℃, the PH value between 6.5 and 7.5, and the hardness of the water between 6 and 8, so that they can breed well.
2. How do zebrafish reproduce1. Prepare parent fish and breeding tank: If breeders want zebrafish to reproduce, they must prepare mature females and males. When choosing parent fish, it is best to choose one with strong body shape, flexible swimming and lively personality. After selecting the parent fish, it is necessary to prepare a suitable container as a breeding fish tank. A net board should be placed at the bottom of the fish tank to avoid zebrafish eating eggs.
2. Control environment: After the breeding tank is ready, zebrafish can be put in. At this time, the water temperature should be kept at about 26 ℃ and the PH value should be kept between 6.5 and 7.5.
3. Fish eggs hatch: Generally, parent fish will produce the next day after entering the tank. After they reproduce, the breeder should keep the environment stable in reproduction, so that the fish eggs can hatch faster.
