Good points from you all. At some point, it seemed that sites such as this one became more a place to just see your words on the internet rather than seriously helping others. I've stopped looking at many of the threads here because they either make no sense or there is no attempt by the OP to listen to sound advice.
The best advice I can offer is to NEVER impulse buy fish. Do your homework first! If you are buying fish from an "assorted...." tank, you better know what you are buying before you bring it home. While it may work in the assorted tank at the store, it might not work with YOUR assortment. There should never be threads " What fish is this that I just bought?" IMO
As for speaking fish names in Latin, that used to be more common amongst the "real" hobbyists.
Common names can be regional but Latin names are universal ( until a whole bunch of fish and corals got reclassified
). I just don;t have it in me anymore to learn all the new names.
And you can stick that in your Chaetodontoplus mesoleucus