Transferring everything back into tank after buying from a gentleman I saw this coral frag. Not sure what it is. I have noticed it doesn't like to be up high with the light it was always closing. Now that it's down it's opened a bit. It almost looks like it has a moth in center. I'll try to get more pics but this is what I have now. Maybe a bubble coral but with it being so small I can't tell. Any help would be great