If one plans on all the same morph and don't plan on breeding, what I found out from most who have successfully done this... what is best to buy from one source and all from the same batch. You have to get them all at once and put them in the tank at the same time. They will work out who is dominant in the family.
But what I'm trying to do is put a lot of different clowns together, so I've been putting them together in quarantine and see if they get along. When there's no aggression, they stay. As soon as I see killer instinct aggression, they don't make the cut. Don't know if I'll be successful in getting a group of different morphs together, but I'm still working at it. If I'm not, right now, I'm leaning toward Picasso clownfishes as my group. If successful, then I have Wyoming Whites, Fancy Whites, Nakeds, Phantoms, Onyxs, Onyx Picassos and Picassos.