I just got a grade b snocasso about a week ago and its about an inch and a half long. It seems to be getting along with my true perc that had been in the tank for over a year by it self. How long does it take for them to become females? A guy at my lfs said he thought it might be 2 females.... How do I tell? Like I said I haven't seen them fight and the never seem more than 8 inches apart.