Ugh stop trying to eat everyone!

So today the rather innocent looking fish you see in my picture decided to try ghost shrimp and demolished one. I checked everywhere. it ceases to exist (and he has a belly that hints where he disappeared to). And then I picked up snails for each of the fish and today he decided to try snail as well and i`m pretty sure killed his in one fierce bite. So anyone have any suggestions to what i can do tank cleaner wise??? because he keeps eating his (besides me I am too big). So frustrating.