I think this is some sort of lps.

[Johniejumbo]

I found this growing in my tank a couple of weeks ago. I haven't added anything new to this tank in almost a year so I'm not real sure where it came from. Can't seem to find anything similar. I hope someone here can ID it for me. It has a skeletal base so I'm sure it's some sort of LPS.

 

[cloak]

It looks like a baby Fungia. (Plate coral)

 

[AcroNem]

That is in the genus Lobactis (formerly Fungia but that has been changed), they will frequently grow new young from the skeleton of former adult polyps that have seemingly "died" which is likely what happened here and you either got the skeleton when it wasn't removed or it came in with something else. Either way that's what it is. Feed it and don't blast it with too much light

 

[Johniejumbo]

Awesome! Thanks for the reply Now I can see how to care for it. I love this hobby. It never ceases to surprise me.