Identification help - pistol shrimp?

[ronsonol]

Hi all,

I have heard clicking in the tank since a large purchase of live rock 6 months ago, and was told it is probably a small pistol shrimp. I've never actually seen it in the tank!

Today, I found this in the tank. Appears to be the claw after shedding (if they do the same thing my cleaner shrimp do).

From the tip of the claw to the end is about 1 inch in length.

Is it indeed a pistol shrimp? Is it a big one? Should I be concerned that it can hurt live stock or something else?

Many thanks for your time.

 

[ronsonol]

I did some more digging around and in the same area found more pieces, another claw that is small than the first. But the pieces make it look like a crab of some sort! Must have hitched his way in!

 

[LeslieH]

Yup, that's from a crab.

 

[sacalaitman]

def crab claw