Can someone identify this?!?

[kenzgrl]

I know it’s really hard to see I’m having a hard time getting a good photo but there is some little circular growth maybe a coral? on a piece of my live rock. Just want to make sure this isn’t some invasive creature that I need to get out asap. It’s mostly transparent with bright with green and orange with bright green little spikes around the edge, it just popped up and I cant seem to figure out what it is? It’s probably the size of a dime.

 

[KrisReef]

That’s a mushroom coral and they can multiply and fill in a spot but most people like them as a hitchhiker.

 

[Staghorn]

Look like it may be a little rhodactis mushroom. Nice score. Where did the rock come from?

 

[JTP424]

Agreed Rhodactis

 

[kenzgrl]

Look like it may be a little rhodactis mushroom. Nice score. Where did the rock come from?

I bought this whole tank set up including the live rock from someone who was downsizing their collection. Must have missed this little guy when they were selling off the livestock! Definitely a score!