[Matman]

Yep pretty sure it's dendronephtya. Liveaquaria has the same sometime, I'm not sure if they give a different name.

I had one for a while. I had some success with it before I got tired of always feeding it and went on vacation. The best you can do for it is to feed it the Fauna Marin dendronephtya recipe. You mix ultra clam, ultra life and ultra seafan with some ultra min D so you get a thick paste and leave it on the table overnight. You can then store it with some tank water and leave it in the fridge for a while and feed it directly to the coral. This food mixture is also good for goniopora/alveopora. You can also add bacteria like mb7 or ultra bio to the mix!