So after adding a Blue Eyed Kole Tang, which went surprisingly well (if anything it felt like the Tang followed the Dottyback around and annoyed it but there was no aggression) I bought an Ornate Wrasse today, and the Dottyback was very aggressive toward it. So I added a mirror and...problem solved! Dottyback is very focused on the new Dottyback in the mirror and hasn't paid much attention to the Wrasse (who has now buried itself, which sounds like can last a couple days).Something equally aggressive could keep the dottyback in check. I have a neon dottyback in a 25 gallon tank with 2 clowns and a six line wrasse. But every fish is an individual. And did you take any steps to curb aggression like rescaping or mirrors?
I wanted to rescape but all of my rocks are structured together. Moved what I could around. Hoping the mirror works.
Thanks for the advice!