Yesterday I had a bi colored blennie go missing. I thought he might have squeezed through the over flow and into the fuge...then sucked to a power head. BUT... tonight I just heard some wierd cliking from my tank. I used to have a pistol shrimp and he would click alot. I only heard like 2-3 clicks tonight. Alot less then a pistol IMO, he used to click like 10 times if he was ****ed off. I'm thinking MANTIS. I have so many rocks in there I hope he comes out to play so i can see him LOL. Because he could prolly live for years in my rock and I would never see him. It actually sounded as if the clicks came from my protien skimmer. I hope he is not in there lol. What do yall think?