My tank has been up and running 8 months now. I acquired what I believe is a Carribean Pistol Shrimp, Brown body light stripe along the back and blue legs, about 2 inches long when I originanly bought my live rock. I had always heard his "snapping" at night so my wife affectionately namem him "Pistolero" spanish for gunman. well about 4 months ago I started noticing my hermit crabs missing, about 5 or 6 of them, I figure they had just died, then 2 of my turbo snails end up dead. 1 week ago I hear some loud snapping I turn on the lights and i see Pistolero wailing on another one of my snails. He snapped 3 times on the 3rd time the snail goes up in the water column about 7 inches and lands. When she lands she i like a a boxer after a knockout her whole bofy is outside of the shell and she can't ge back in she just lays there for about 5 or 6 hrs she finally comes to but 2 hrs later she is dead!! I discover that this is happening when the snails get to close to Pistolero's tunnel entrance. I guess he just doesn't like any guests. What do you guys think?