Hello, I have a five gallon tank, heated to around 77 degrees, with a hang on back filter. It is fully cycled and has some live plants and some fake. I went to my local pet store that I trust very much to help me pick out some new fish a few days ago, but I am afraid they sold me a bad combination of fish. I've never owned these types of fish before. Right now I have 3 scarlet badis and 3 celestial pearl danios. They were not sexed in the store and their colors are a bit pale (but intesifing every day!) to tell gender for sure. I am not sure, but after some research I am afraid I might have 3 male scarlet badis. The fish store assured me that 3 of any gender would be okay in a five gallon, but now that I have them home, aI've noticed one that hides almost all the time and some territoriality. I've been reading now that one male is best for a five gallon. I'm not sure who to trust... my trusty fish store or the internet Since I'm not sure on gender, would you guys recommend that I return one or two to the store to prevent aggression? I want them to have a good home. Thanks for any advice you can give!