Red zebrafish and blue zebrafish can breed. They are both fish of the same species, and there is no reproductive isolation, so they can cross. Many farmers will cross red zebrafish with blue zebrafish. Some zebrafish will keep blue stripes, but their body color is red, while others will keep red stripes. So red zebrafish and blue zebrafish can breed together. 1. Can red and blue zebrafish breed? Red zebrafish and blue zebrafish can breed because they belong to the same kind of fish and have no reproductive isolation. The biggest difference between the two is the color of the body, so it is ok to breed together.

And now many farmers will choose red zebrafish and blue zebrafish to cross together. Some zebrafish will keep blue stripes, but their body color will be reddish. Some will leave red stripes, and the color of their bodies will be slightly blue.

Second, how to breed zebrafish 1, and prepare the breeding environment: zebrafish does not have high requirements for the breeding environment, and farmers only need to ensure that the water temperature is around 26℃, the water quality is clean and refreshing, and the surrounding environment is quiet.

2. Choose the right parent fish: If you want zebrafish to breed, you should choose mature parent fish. When choosing parent fish, it is best to choose some bright-colored and active ones, which can improve the breeding quality.

3. Mating: Zebrafish spawn and fertilize in vitro. When breeding, the male fish will keep chasing the female fish, and then the female fish will lay eggs in the process of chasing. After the female fish lays eggs, the male fish will fertilize immediately, and then the fish eggs will become fertilized eggs.

4. Hatching: The fertilized egg can hatch into small fish in 2-3 days at the water temperature of about 26℃. During the incubation period, breeders need to keep the water temperature constant and try not to change water. After hatching, a small amount of water can be changed.