zebrafish in pregnancy, its abdomen will be significantly bulging. From the top of the tank, its belly is square. Its temper will also deteriorate, and it is easy to be irritable. If there is a male in the tank, it will chase the male. During the chase, it was clear that it was not swimming as fast as before and was not very flexible. In addition, there is a very obvious change, that is, the female fish's genital pores will protrude outward. When its abdomen is observed to be pink, it indicates that it is about to lay eggs.
Although zebrafish is an oviparous fish, the female fish does not need to hatch the eggs after producing them. As long as the eggs are at the right temperature, they can hatch into small fry. And the growth rate of small fish is very fast, so the incubation time will not be too long. The time it takes to hatch fish varies depending on the temperature of the eggs.
Specifically, when the temperature is 24 ℃, the small fish can be born in 2 to 3 days. If the temperature is higher, the incubation time will be shortened. If the temperature can reach 28 C, the small fish can hatch in only 36 hours. If you want small fish to hatch as soon as possible, you can put the eggs in the incubator. Keeping the fish eggs in a constant temperature environment is beneficial to speeding up the hatching of the fish.
