Coral ID help please

[Pakratt]

These are growing at a fast rate attached to some live rock we got when we started the tank. Not sure if they are palys or zoas of some sort. Any help ID'ing these? Thanks

 

[BryanM]

Those are either zoas reaching for light, or palys, if the latter they carry what some of us believe to be significant risk (Palytoxins).

With the purple/red color they look like zoas starving for light (zoas can also carry palytoxins, but not nearly as common).

 

[thamnasteroid]

Zoanthus vietnamensis