http://webfiles.uci.edu/algomez/photos/bc14/031407/IMG_1689.jpg
The echinata ate everythign around it.  Zoa's, and candycane.   Luckily it left the plate alone.  I later moved it to the right side about 4" away from the torch and hammer.  More echinata food.
They are nasy loaded guns waiting to go off. I still really like them and have two in my tank, but I give them lots of space. 
(btw phong/Roc, you can see the little neon in the top of the tank to the right of the big leather..that is the parent to your frags lol)