Scrunge
Adding to what has already been said, first, it depends on your tank size and second, you need to have a group of females with a male betta not just one.
Anonymous
You will soon only have one betta, but that could live with a SAE, assuming you have a tank around 20 gal.
Make sure it s a SAE, not a Chinese. They get too big and aggressive, and would eventually kill a betta.