I keep a female betta in my community tank, other than getting a little grumpy at a particular molly who always takes her food, she is quite content in her home with mollies/bala/snails/ect/ect
My male Betta, however, had a profound racist reaction to anything Bala.
So My male lives with a shoal [5] Albino Cories, and a few Zebra Danio