My LFS has some pretty small Tomini Tangs, like maybe an inch at most. Do you think it would be an issue if I added it now and added some other peaceful fish afterwards, or should it be my last fish?Yes for the most part. However I would choose either the mandarin or the scooter blenny (and make sure you have enough pods)
I’d get two different species of flasher wrasse
Then the tang may scare the scissortail
I have a Midas Blenny, Scissortail (both much bigger than the Tang, and two Oscellaris Clowns.