hitch hicker on my zoa frag

[scuba guy ron]

any idea as to what this is on the left of the zoa frag? I think it may be some type of sps since the polyps are smaller but not sure. not sure If its just a smaller polyped lps or not. an id would be appreciated along with care tips.

http://i216.photobucket.com/albums/cc115/ronnyfl22/DSC00783.jpg
http://i216.photobucket.com/albums/cc115/ronnyfl22/DSC00784.jpg