I currently have a yellowtail damsel that's been there for about a month and a half. In another month or so I want to add a clownfish pair to my 30 gallon nano reef. I know damsels can be aggressive, and with the yellowtail being in the tank before the clowns, I wanted to know if a pair of ocellaris clowns would be harassed to death by the damsel, or would their aggressions balance each other out.