ID help please

Can't remember what this one is:

 

Looks like a Montipora hirsuta.

 

Polyps aren't yellow. And the weird thing is I have no idea where it came from. I'm cleaning out frags from the frag tank and I have no idea where I got it or how long it's been in there.

 

The ID is off the growth shape rather than the colors. Colors is a horrible way to ID any sps. M. hirsuta comes in different polyp colors as well, such as cream, brown, green, and blue that I've seen. It could also be M. stellata as well. Break a tip off, bleach it and take a closer look at it under a microscope if you want to have an actual crack at the ID.

M. hirsuta
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0526

M. stellata
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0274

 

Nah. I'll trust you.