The female should have been removed as soon as the spawning was complete for her own safety. The male is usually removed when the fry are "free swimming" which would be after 3 or 4 days. Before that you will see fry falling from the nest and the male will put them in a bubble in his mouth and blow the bubble back into the nest. At that point they usually have a visible yolk sack still attached to them. When they are actually swimming and not just falling from the nest they are called free swimming.