I'm new to the reefing hobby and am planning on adding a pair of clownfish after i get my 75 gallon tank set up and cycled. I've been reading that clowns are actually damsels and I understand damsels tend to be aggressive as I have have some years ago. Is it a bad idea to add more than two clowns to a tank? I was playing with the idea of maybe adding four. And will they become aggressive towards other fish if they are the first added to the tank?