My auratus had a 55g all to himself, but it was kind of boring so just today i put in 2 peacocks with him. He definately lets them know who is boss, but none of the fish have even so much as nipped eachother yet

I think its going to work out just fine. I have tons of rocks and plants for them to hide in, so should work out well.
Anything I should know? Should I be pretty safe now or do most fish get aggressive after a few days?