What is this coral - Pic inside

I bought a frag of this sometime ago and I am not sure what it is.  I was told its very aggressive and keep other corals away from it, this I have done.  I was initially told it was tongue coral after asking around but to me it doesn't look quite the same.  The base is a very nice deep green with what appear to be 'lots of mouths' and it will take various foods, flake/frozen/just about anything the food seem to disappear into the coral. 
My photo stinks....  the base of the coral is a really nice green, the underside is yellow (before it decided to attach to a rock buried in the sand) an the tentacles are a very light green.  After experimentation it seem to like a medium flow/varying flow and light doesn't seem to matter much.  Seems to be a fast grower and I would like to get some frags off it in the next month or two but need to know what it is. 
Again this photo stinks, still working on that ability.

 

What? Looks great on mine- just a min  Its on my google account as I am having trouble uploading to GIRS.
EDIT:   I have it set to public, never had a problem before can anyone else see it?

 

I duno... it all seems to be set up right. I guess the photo does stink!! EDIT - I pasted the link again, sounds like its working
Anyway, back to the coral for Bill... Not sure if it is suppose to be encrusting. It was not when I got it but it latched onto a rock that was in my sand bed.

 

Posted By calebjk on 03/17/2009 04:02 PM
That is a Galaxy coral. It has milky white feeding tentacles that will release and sting other corals. It seams like the more current you push at them, the more they like to release their tentacles.
I have never seen it release tentacles and I have never seen them get any longer than whats in the photo. -huh

 

I am still a little doubtful so, I will get a photo with the tentacles retracted and see if that helps. It is very sensitive and does retract its tentacles very fast, then a few min later they will be fully extended.

 

Maybe this will help more...  I guess the base its green, its just the tentacles, they are just a deeper green when they are retracted.  The base is a pale pinkish color.  It is some sharp stuff you bump your hand against it and it will give you a little cut.
It would be nice if I could get a better photo with the true colors of it.