I have lots of crabs, peppermints, and snails. The snails are large Nassarius, mexican turbos, and large astrea. The crabs are a mix of mexican blue and red leg hermits. The puffer and eel are spoiled and wait to be target fed all of the time. I'm sure I've lost a few to carnage but not many. The large Nassarius snails I have are sand burrowers and they only come out late at night and only if theres no food for them to find in the sand.