Yeah mine was great for a few months but as it grew it definitely got way more aggressive, part of that is probably my fault for having one in a 20 long which is a little small for such an active fish. However my blennies and my cardinal have no problem standing up to it. The skunk clown on the other hand usually catches the brunt of the aggression and is far more passive than the others, it's still all rather mild. The time I added a damsel was absolute insanity. The wrasse would have killed it in an hour if I didn't pull it out and figure out a new plan.