I'd say the coris wrasse if they were just being flipped, but if they are being moved around probably something else....

The bigger the coris gets, the bigger the rocks it can and will move. I had a red adult and as beautiful as he was, had to remove as he killed a couple of corals by constantly flipping them.

Coral mover
 

My bet is the "hippo" Tang!
Had to get rid of mine cause he would empty my frag rack every day!
Man I hated that fish.
Keith.

I'm guessing the tang too. I had one once who would spend hours picking up small rocks and moving them.

Wrasse

I'm going tang. Mine moved stiff all the time as well.

Thank you so much guys for participating
here is the video of the me placing small coral colony "where i wanted it to be"

http://s381.photobucket.com/user/RuG...ac50a.mp4.html


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And here is the video of that coral being thrown away from that spot.
Congrats to those of you who guessed it right !
:clap2:

If not for the car dvr i would have NEVER guessed who!

http://s381.photobucket.com/user/RuG...b5d79.mp4.html

hahahaha great job getting it on camera!

My Hippo tang moves stuff usually if it is blue or a new coral.

My hippo tang does move my sps around lol