1. Observe the anus of the female fish carefully. If the ovipositor tube is found to be a little bit shaped or obviously dropped and pulled out, then the female fish will definitely produce larvae within 2-5 days, just put the female fish into the breeding pool alone.

2. During this period, we need to be careful not to change the water quality excessively. The drastic change of water quality will directly lead to premature birth of female fish, resulting in immature larvae and even undeveloped fish eggs.

3. The litter size of Mary fish depends on the size of female fish, which generally increases with the growth and development of female fish, ranging from 40- 100, and some fish can produce about 200 fish at a time.

4. After the young fish are produced, the female fish will also be fished out, swim by themselves after a while, prey on smaller water fleas, or directly feed artificial bait with smaller particles.