Thats right, ,really at any time. I have found, however, that if you separate them from the parents really early they grow slower, trama(sp) or something. The fry will school for a week or so but as they start to get biger and more adult looking they will skatter and start acting like adult fish. This only takes mine like a week or two. That is when I separate them. If you have other fish in the tank, it is when they scatter that they get eaten the most. Just my opinion.