Favorite fish for a 3' tank

[Fishfreak2009]

If you could pick 1 reef safe fish you absolutely had to have in a 3' 65 gallon tall tank, what would you choose?

Planning my stocklist and trying to see if there's something I'm missing. Tank will be primarily Acroporas with some Montiporas.

 

[vtecintegra]

I'm liking my tailspot blenny. It's a crazy little fish. All over the place and pecks at algae like a chicken pecking the ground.