I have a 55g, cycled, tank. I have two power filters a regents 40g which came with the tank and a whisper triad which I bought after I realized the one with it was inappropriate. Presently I only have to moolight gouramis, which I believe are males, and 5 danios. Now I know danios and gouramis are not advised but my moonlights don't seem to mind them. That is my first question would anyone strongly advise at keeping them together? Also the moonlights being both males would this pose a problem in the future? As of right now they leave each other pretty much alone with an occasional chasing off. Also could I be able to put in a pair of pearl gouramis and opaline gouramis or is this not a good idea? A response would be greatly appreciated thank you.