I guess I should stress that I first of all always do what I want to learn by trial and error. On that note I have a peaceful tank of 2 male Betta's and 3 females with a male and female flag fish. recently realized that one of the babies I thought was a girl is a boy, lol. I'm thinking of adding another male, any opinions on the best way to slowly introduce him? thanks for all opinions, and please share whether you agree or not.