So I have a 40g 2 - Ocellaris 1 - Flame Angel In a few weeks I want to add a fourth fish. Since I have a 40 gallon I am limited. Once I get my skimmer I will add the 4th fish and possibly down the road a small goby as the 5th and final fish. The guy, who is normally overly cautious and knowledgeable told me that a Flame Angel and Potters Angel would do ok together and not fight. Anyone have any suggestions?