Does anyone know how to sex a dwarf gourami? I bought two dwarf gouramis a while ago, one blue one red, and since then their aggressiveness towards each other has only grown more and more. I’m assuming both are males and the fighting is for dominance (really only the red is aggressive, the blue gourami is usually minding his own business and will only attack in self-defense). The point is, I want to get rid of the male red dwarf gourami (probably move him to another tank), but I like his species coloration. So, I want to be able to identify a female when I see one (if possible) so I could put her with the blue gourami, thus there will be no more fighting and I can still have that species of red dwarf gourami.