What kind of polyp?

[Boomer]

This came on a piece of live rock we got about a year ago. It was pretty bleached out in the beginning and small.

Ant ideas?


http://i8.photobucket.com/albums/a25/fishfriend/004-1.jpg
http://i8.photobucket.com/albums/a25/fishfriend/002-1.jpg

[CBART]

I think it is a Button / Zoa / Pally...... I'm not sure what the actual difference is. People seem to use these terms for the same things, but I am sure some one will correct / inform me after I post this reply.

[jeff_k]

It's a palythoa, or sand polyp.

[Ricar]

Looks exactly the same as mine. They spread easily and when they get big they can take down a guppy. Mine get to about 1.5" or so, nice green in actinic light. Some people concider them a pest as they will take over a tank in time but are not troublesome like aiptasia.

[Boomer]

We have had this polyp for at least a year and it hasn't spread at all - just got "healthier" looking.

Interesting info though thanks!