So I have a 20 gallon tank, currently understocked (if you don't count guppy fry) nicely planted and plenty of hiding spots. I have 2 Sparkling Gouramis, and if i could figure out their gender, get one more if it allows. I know its impossible to sex them, but I can't figure out if they're female or male! Male gouramis fight, but when they're not by themselves they costantly follow each other around. They don't attack each other, or show signs of aggression...but occasionally they circle each other like sharks! Can't tell if they're being aggressive or not, they don't croak at each other like male sparkling gourami do...perhaps they are both female? Gouramis don't school..Any advice is appreciated