Another Acro ID

[chipchip]

Hi all

I have a dark blue/green Acro but I dont know which one it is. I think its kinda like a tort.

What do you say? Sorry for the bad pics they are taken with my iPhone..

 

[SantaMonica]

Even with the phone pics, the blue really comes through.

 

[Frick]

I am thinking A. austera that is growing very thin.
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0010