i'm thinking of getting them for my tank. i want to get a pair, male and female, but i'm not sure i'll be able to tell them apart at the store and i'm not that confindent in the knowledge of those lfs workers as they couldn't even sex livebearers. so what if i get two males or two females, would that be a problem? and am i better off getting just one? do gouramis prefer to be in pairs, groups or alone? thanks