Hey, people I've been hearing a lot of things about betta fish in communal tanks. Trust me I'm all for the rule that if you can resist the urge to out more fish in with your betta you should. But, there are many of us who just can't resist putting friends in with your bettas. I stand accused. I currently have only one betta in a ten gallon with one dwarf Gourami (yes I'm aware of the risk and that there are in same genus), a golden dojo loach, and an albino brissle nosed pleco (yes I'm aware of the size and ammonia risks). I however have never had any problems with bettas in any communal tank. I've kept them with parrot cichlids, jack knives, arrowanas, various cat fish, almost every species of Gourami, tetras, platis, swordtails, guppies, minnows, etc... The point is that when keeping a betta, yes okay there is a risk with keeping any kind of aggressive fish with equally aggressive, more aggressive, and less aggressive fish.
. But let's take a moment to look at cichlids... I can't think of a more aggressive genus, but yet cichlids are probably one of the most common communal species. People house upwards of 40 fish in a 100 gallon tanks with minimal aggression problems. I've kept bettas with various cichlids with minimal aggression problems. I've even had bettas live with multiple males and not kill each other in a well planted out door pond with koi. The point is bettas are just like other fish. And they can be housed with other fish given the circum stances that you have a healthy happy fish. And yes I've heard the storys of people fish killing other