Finally found my little snapping friend

[levi1803]

So I have heard this little guy in my tank for the last 6 months but have never seen him, I was sure it was a mantis shrimp but obviously not, appears to be a pistol, anyone know what kind he is? I found what rock he was in and took the hammer and chisel to it tonight to find the bugger as it was driving me crazy trying to figure out what it was. I'm not really sure what to do with him yet, but is actually quite pretty. Any suggestions? Pics aren't that great, but good enough to see him anyway. He/she is only about 1/4 of an inch, I can't believe it's this small and made such a loud noise, pretty amazing actually.