Possible Pistol Shrimp?

[grayne]

Over the last few weeks I have been hearing popping noises coming from my tank. I was worried there was a mantis shrimp hiding somewhere so I have been keeping my eyes open for it. Last night I was looking around the LR witha flashlight when I saw a small white crab-like arm reaching out of a piece of hollow LR. I held a sinking shrimp pellet over the hole and it kept reaching its arm out to grab it but I could not see its body. Could this possibly be a pistol shrimp hiding in the LR that is making the popping sound? I am not familiar of how pistols look or act, so if anyone has any ideas or information it would be greatly appreciated.
Brian

 

[kpogue]

It's a good possibilty. Mantis are usually very quick when they grab things. Pistols have one claw that is much larger then the other.