Shrimp ID - blue color head & claws

[Nano Reef Q]

I tore up my tank today trying to locate a baby mantis or pistol & this was only thing I could find.
Last weekend I pulled a 1/2" pistol out & took him to my LFS. Then came home from my biz trip last night & heard snap noise again. Usually just one snap or one snap followed by 2 more a few secs apart.
Usual tale that inverts are disappearing slowly hence removal of larger pistol I knew about due to dig area in my nano tank.
I heard a snap in a rock & this guy was only thing flushed out. Body does not look like Mantis to me, but I don't know of any pistols w/blue.
Guess away!......
This critter is about 3mm long-very tiny.

 

[dragonfisher33]

Pistol shrimp, come in different colors and sizes. Probably came as a hitchhiker from somewhere

 

[johnl99]

I would say a pistol as well. I've seen some of the Caribbean species with blue on them.

 

[bios]

Periclimenes imperator

 

[Nano Reef Q]

Thx everyone. I will release him then. I've had my live rock from TBLR for 7 mos. only time I could have had hitchhiker...would have expected him bigger unless he was an egg as a hitchhiker...& then maybe I have more hidden? I have to wonder if this tiny guy made the noise, I really can't believe it if so.