I agree, Picasso (Percula) and B&W (Ocellaris) though they can live together it is rarely successful. Heck I had a Perc and GSM Female paired for over a year, and decided to add a Male GSM. I have a 300 and still only have one pair in it. If you want more then 1 pair of clowns do what I did and transform one room in your residence into a Clown room "Fish". Man I Sure Do Love Clownfish.