Do I have a mantis?!?

[B Pierce]

I have a 29gal. bare bottom SPS tank. I have about 20lbs. of LR that I have had in there for 2 years. A few weeks ago I got an enrcrusting montipora that came on a very porous piece of LR the piece was much less than 1lb.

Latley I have been hearing clicking in the early moning and late at night. Nothing has died(snails fish ect.) Do you think I have a pistol shrimp, mantis shrimp or I am just crazy?

thanks,
Bill

 

[B Pierce]

btw is there any other way to tell if there in a mantis in the tank?