Keeping two Bettas of opposite genders CAN be risky, so here are my tips on keeping a male and female in the same tank! ... read more
While I would never put a male Betta in a tank with any other fish, even a female Betta, I have heard of sorority tanks where female Bettas have lived together quite peacefully. However, the success of these tanks was mostly due to the fact that they were big--Betta aggression mostly stems from territory, so having lots of space and places for them to hide is recommended when setting up your tank. read more
Two female bettas will often fight to the death (or, more often, fight until one jumps out of the tank in hopes of flopping towards a nicer puddle), and three females will often result in two ganging up on the weakest one. read more
Male and female betta fish are usually kept in small containers at pet stores because of their territorial aggression. These temporary containers are meant to isolate them from each other and other fish. Every betta fish has a different personality and level of aggression. read more