I have 2 Ocellaris Clownfish and one orchid dottyback in a 29 gallon tank. The three of them seem to get along real well and the clowns ended up pairing. After a month I added a fire fish gobe which ended up fighting with the dottyback a lot do I had to remove him. Same thing happened with a royal gamma that I added later so I had to remove the gamma as well. What other fish should I add to the aquarium that would be compatible with these three? I only really want one or two more.