Pistol shrimp eating cuc
 

As the title says I have a goby/ pistol shrimp pair and am wondering what to be feeding the shrimp? He was really good for a long time. Now he has eating my hermit crab and one snail. So what should I be feeding him? I don't blame him for anything it's just nature, but I also don't want him to finish off the rest of my cuc. So what do they like to eat beside my cuc?

i feed my tank mysis,brine,bloodworm mix and i make sure i get some of it in the pistols house. so far mine only steals my frags that are on the sand bed!

We feed ours, pieces of prawn, cod, sole. It must be content cause he only reaches out of his hole, never ventures elsewhere.