I just fed the fish, and what comes creeping out of the rock?  A Eunicid worm!

 My luck!  So far I don't think it has caused any troubles, but it is pretty small still.  It's body was about 3mm diameter, and I saw about 4" of body.
Got a FTS today too:
Candlelight Acro that was a brown blob in my tank for almost a year is suddenly bursting with growth and color:
