Any tang is a "no" for your tank size. I'm sorry -- you will have a gorgeous tank, but there are arguments on here about proper tank size for a tang, but a 65 will be cruel once it reaches its adult size. Also...every dottyback I have ever had has been a huge bully, despite their size, but I have never owned and orchid. I've had good luck with coral beauties and bicolor angels (dwarf angels) -- but any angel can be a potential problem. But mine have behaved themselves in the tanks. I think your tank could handle them, but it would be pushing it. Liveaquaria has a good website and tank/fish combo suggestions: https://www.liveaquaria.com/category/15/marine-fish
