I got a peppermint shrimp to help with the clean up of my nano tank, and today I noticed that he was attacking/eating a Trochus snail. Early in the day I had uprighted the same snail thinking it had fallen off the side of the tank, but when I saw him upside down with the Peppermint Shrimp working him over, I knew what really happened. The shrimp was always so greedy for food at feeding time... I thought they were supposed to be docile!!