I have not tried that yet, good thinking. A few questions for you about it. Did you put the mirror actually in your tank or did you tape one flat against the outside?
I have a 4"~5" Powder Brown Tang that needs a good home. He has become aggressive to my Sailfin Tang, so he needs to go to a home that the other fish can deal with him. He has not messed with any of my other fish, just the Sailfin. I purchased him from TSM Aquatics back in November of 2021...