im debating about turning my 10 gallon into a betta sorority. if i go that route how many should i put in there?
I agree, Bettas have a wide range of personalities. You could try it but be ready with an extra tank to separate them or be prepared to take them back.Some say lots some say single. It just depends on the bettas, just like when you house males with other fish IMO. Years ago I had 2 females with a few guppies in a 2 gallon tank. Now that I know more about fish I would NEVER recommend that. I am just mentioning it to say that no one picked on anyone in that tank.
I would say that if you decide to get around 5ish, get them all at the same time and be prepared to make changes to the set up if need be.