my new little Copperband Butterfly fish

[Reef Pilot]

Originally Posted by clown lover

Oh no! I have a yellow tang in the 90 DT, if it's going to be too much for the CBB getting chased all the time maybe I'll get another one and the 33 long will become my other smaller DT. From what I read similar body shape can be an issue with tangs.
Nice picture Doug, thanks for sharing

The challenge is the first few days. After a couple weeks, the yellow tang should accept him and leave him alone. At least that's what happened with mine. If you can distract the yellow tang with a mirror, or picture on the side of the tank, that can help.

That's why the CBB has to be strong and able to escape. My CBB was very good at instant 180's and able to avoid the tang. Or you can remove the yellow tang for a while until the CBB gets acclimated to the DT. That is, if you can catch him. Again, it is usually only a short term issue, worst is the 1st couple days.