All betta fish varieties, such as crown tails, veil tails, halfmoon, or delta bettas, are all the same species, so they can be crossbred. ... Also, because betta fish are often bred so selectively within their variety, cross-breeding different types may raise the risk of health issues or deformities in the fry.

Can you breed two different types betta fish?

Cross-Breeding Betta Fish

In some instances fish hobbyists decide to try to cross-breed different species of Betta fish. Most commonly Betta splendens are bred with other Betta splendens; however, cross breeding does occur. ... The Betta splendens has also been cross-bred with other types of fish.

Can betta fish breed with other types of fish?

Two male Siamese fighting fish will fight to protect territory and should never be placed in the same tank. ... Male and female Siamese fighting fish should not be housed together unless it is for the purpose of breeding. They are likely to become aggressive with each other either before or after breeding.