So many choices I agree with everything above pretty much lol. I went with an Electric blue acara, pearl gourami & some praecox rainbowfish. Then a little bit later I turned my quarantine tank into a betta tank. I've had em for almost a year I think at this point and haven't lost any yet. The pearl gourami is a little more aggressive than I thought it would be, going after the rainbowfish but it can't catch them.