not uncommon, my female cinnamon clown would pick up any frags she didnt like and swim across the tank sometimes she would throw it in the sand and swipe its tail at it lol.she picked up a whole pocci about 4" on a concrete frag disk did the same thing swam acroos the tank with it lol i always wondered how much she could actually carry if she wanted. more times then not though she just picks the frag and tosses it lol
more than likely your invading its territory and its defending it throwing it to the back of the tank out of its sight lol
pic would be cool though lol
