Shaun,
I had an occellaris for about 6 months before I found an amazing Gold Striped Maroon that I had to have. I added him and the two seem to do well (against mixed reveiws/advice about doing so) I figured if it didnt work I could take on out. They seem to do well. I will say sometimes the occellaris nips at the other at feeding time. I have to sort of spot feed them seperately. Let us know what you get...with pics too
The other option (and probably more favorable and my choice if I were to do it all over again) would be to catch the clown you have now and move him to another tank or trade him in. Then get a matched pair or variety that you want and add them all together.
Rob...what do you mean by add them 'correctly'?