Tiny hitcher

[Moort82]

This was a hitcher on some live rock at the lfs. I believe it was on the base of a soft coral from Vietnam but might be Bali.
As you can see from my finger tips its tiny at the moment and this is its closed up state. When open there is a green luminous centre and I have a possibility in mind but appreciate your opinions.

[cloak]

Favia or Favites?

[Moort82]

My personal thought was Leptastrea going by the small size of the polyps. Its hard to tell but they are around 1mm across each if that.

[cloak]

Have you seen any polyps at all? Maybe it is a Leptastrea. Here's a picture of mine just for comparison.

http://i172.photobucket.com/albums/w16/jAb83_2007/leptastreas_zps3bad28c8.jpg (http://s172.photobucket.com/user/jAb83_2007/media/leptastreas_zps3bad28c8.jpg.html)

[Moort82]

I'm not there at the moment and took the pics this morning before the lights were on plus I had to do it out of water. I'm fairly sure its similar to your top one in the pic but the polyps do look smaller at the moment. I assume its just settled out as there is another one next to it which is a single polyp at the moment and I found another on the base of the same softy which I couldn't get to.
Thanks for your thoughts though.