i once had a betta in with some tetras and 2 bigger fish (it was back in the day when daddy did it all and i looked at the cute fish), and i have herd they are fine in a community tank, but i am skeptical. My mother has agreed to let me put my tank in the dinning room as long as all the fish are "beautiful" and approved by her (basically it needs to compliment the room, which in my opinion shouldnt b hard bc we have 2 parrots in their already, its a mess lol) so ANYWAYS she decided that she loves male goupies, we now have 3 and she wants a betta with them. i just dunno wut to tell her. i hear yesses and nos. i dont mind trying it and removing him if there is a problem, just lemme know.