Zebrafish still lay eggs, and how old can they lay eggs

Zebrafish lay eggs. They are oviparous fish. When they reproduce, the eggs are produced by the female fish first, and then the male fish are fertilized. Fish eggs will develop in water after fertilization, and only when they mature can they hatch small fry. The whole reproduction process is standard egg laying, so the way they reproduce is to lay eggs. The breeding cycle of zebrafish is relatively short. Under normal circumstances, they can reproduce once in about 7-10 days.

1. Whether zebrafish lay eggs

Zebrafish lay eggs, they are oviparous fish, and they are all fertilized and developed in vitro. When zebrafish breed, it is the female fish that lays eggs first. After they lay eggs, the male fish will immediately come forward to inseminate. After successful fertilization, fish eggs will develop in water. When the eggs mature, they will hatch small fry. Their whole reproduction process is consistent with egg laying, so they are egg laying fish. Zebrafish breed faster. Under normal breeding, they can breed once a week or so.

2. How old can zebrafish lay eggs

Zebrafish grow and develop rapidly. As long as the breeder can ensure that they grow in a comfortable environment, they can mature in about 3-4 months. If breeders can't guarantee that they have enough food and nutrition, they will mature later, which takes about 5 months. If breeders want to make them mature faster, it is best to feed them more nutritious foods, which can not only speed up their development, but also strengthen their physique.

Although zebrafish can mature in about 3-4 months, breeders are not recommended to let them reproduce immediately. It is best to wait for them to develop for about a month, so that they can reproduce more stably.