one of my favourites unkown

[Fish4life28]

Anyone have a guess. Prob easy but seller didn't know what it was

 

[Frick]

That's a tough one. Definitely looks like a bottle brush type. The axial corallites are tapered so that rules out A. echinata and A. speciosa.

I am going to guess A. turaki for now.
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0714