First, how big exactly is the tank, and second do you mean get more bettas or get different kind of fish? You need at least a ten gallon to get a school of other fish. If you mean other bettas, you can't put males ever together period. I've only heard of one member who has males together, and there like in a 55 or more gallon tank. Also, I'm not quite sure about putting a male with females. Ive heard about it, but not quite sure how it's done but it would most likely take someone with quite a bit of experience with betta's to pull it off properly.
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