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Hi. I have a 20 gallon long tank and I was considering maybe making it a betta sorority sometime in the (probably distant) future. I know it doesnt always work out and there can be problems. I was just wondering if maybe I started with all of them as babies then maybe they wouldnt be agressive once they reach maturity because they would be more used to eachother. Also what would be a good number of female bettas for a 20 gallon long sorority?