I will be separating the boys when they become aggressive and start nipping the other bettas. Right now I can pretty much tell which ones are males and which ones are going to be females because the males have longer fins and I can already see the ovipositor(white dot between ventral fins) on the larger females.Just curious, at what point do you need to start separating the boys from one another? Thanks for the update and this thread. Congrats and GL.