I did it again, forgot the species name of my new SPS coral branch

[Ballyhoo]

can anyone tell me the name of this coral branch and maybe a little bit about it? Well, I suppose if I have the name I can research all about it. I imagine this one won't grow very much. as usual, I walk out of LFS and forgot the name of what I bought.
thank you'

 

[Chrisv.]

That's an acropora of some species. It can be difficult to nail down past the genus level.