Well I am giving it a shot tomoz I will get rid of my cleaner shrimp because I don't want them to be killed also he is very peaceful in the shop not bothering anything so I will give him a shot also they had a hawk there a scarlet but I asked would it be okay with the shrimps and the person at the lfs said he would grab them in his mouth and scrape and/or smash them up the glass or rock isn't that brutal lol