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  1. Which fish can be placed with a single male betta?

    Betta Fish Compatibility
    I bought a betta from my local pet store a few weeks ago. He went from being in the tiny store bowl to a 1-2 gallon bowl and now I have him in a 10 gallon tank. :) In the aggressive range, i think he might be a 6 or 7 (10 being the highest). When he was in the 2 gallon bowl I put a male guppy...