Whether or not a betta gets along with ANY other fish depends on the individual betta. I guess the exception to this would be a male betta with another male betta, as this is never a good idea. (There are exceptions to this too I'm sure...) There are a number of people I know that keep bettas (male bettas) in community tanks with no problems. And others that need to be kept separate from everything but snails. It just depends on the fish.