Dear sir
My siamese fighting fish male bites the female ones so what shall I do now

I think you should separate them or there are other males in the tank are there fins hurt please be specific if there find are hurt or not

I think you should separate them . Are there other males in the tank that causes them to fight . Are there fins hurt please be specific if there find out are there fins hurt or not

Separate them. Take the male out at the very least. Male and female bettas should never be kept together, with the exception of for breeding purposes. And it sounds like you may have multiple females? They can get along under the right circumstances. But, you may need to separate them as well.

Great Fish For Your First Freshwater Aqaurium - Aquarium Setup