? Zebrafish will spawn in winter, provided that the water temperature can be kept at 20 to 23 degrees and the pH value is 6.5 to 7.5. Under such suitable conditions, 2 to 3 pairs of 5-month-old parent fish can be selected and put into the breeding tank at the same time until the end of spawning at about 10 o'clock the next day. At this time, the parent fish needs to be fished out. The breeding cycle of zebrafish is about 7 days. It can reproduce 6 to 7 times a year. The quality of spawning is very high and the reproductive capacity is very strong.
of zebrafish spawning is very high, but the number of hatched small zebrafish is very small, so we should pay attention to the following matters of zebrafish spawning:
1. Water environment: during the breeding and hatching of zebrafish, we should maintain a constant water temperature, clean water quality, PH value, and the softness and hardness of water.
2. Parent fish: Select 5-month-old parent fish and put them into the fish tank at the same time. A layer of mesh plate or pebbles should be laid in advance in the spawning tank. The eggs laid in this way either fall under the mesh plate or scatter into the gaps of the pebbles. This is to avoid the problem that the parent fish eats the eggs laid. After spawning, the parent fish should be fished out of the fish tank in time.
3. Management: After spawning, the unfertilized fish eggs will begin to turn white. At this time, the fish eggs can be sucked out with a straw and placed in a Petri dish for incubation.
