I have a male lyretail anthia I got about a month ago. When getting him, I had the intention of getting him 3-4 females to be with. Would it be ok to add the females one by one or would they need to be added all at once?
A couple things here:
First, I would add them all at the same time.
Second, you need to make sure they are definitely all females. Hopefully one of them hasn't started the transition to male.