coral ill?

[cf17]

Hi, I have a coral which has recently been looking ill. It was growing well over the past six months, expanding with more of the spiky 'tree' things. Then a few days ago I noticed there were a lot less of them. Is there anything I can do about it?

I'm not even sure what coral it is, so if anyone could identify it? The 'trees' open up when the lights are on and disappear at night.
Thanks.

 

[cloak]

Baby Fungia perhaps?

Can you get a couple more pictures of it, maybe at different angles?

 

[cf17]

Okay, this is a picture from a few months ago when it was healthy. (really blurry because it was in the background)

 

[accelaraptor]

Might be some Xenia. Hard to tell from the pictures.

 

[cf17]

Thanks, I just did an image search on Xenia and couldn't find an exact match, but some looked pretty close.