Loud Clicking noise coming out of the tank

[crehman]

I had two hitchhiker mantis and a 1 pistol in the very first 25lbs of live rock i ever bought.
The big difference i found was the mantis click seemed to be three clicks in a row where as with my pistol it was one loud click. For a long time the mantis never harmed anything in my tank.....but after about a year i had some crabs and a pepperment shrimp go MIA. I had cut back on my feedings and i think thats when they started wanting more than frozen mysis.
Its something that i would personally keep an eye on and i hope that it is a pistol. Mantis Shrimp can be beautiful creatures and are highly intelligent and fast...but are nice in there own tank and not your reef.
Best of luck.

[Corbin]

mantis haters! lol. or just hope its one of the speices that doesnt grow over an inch like mine.

[Steve-O-]

I had the same thing, 3 clicks i saw him one day and ripped out the rock he jumped out on the floor. Was a peacock mantis full of color ended up giving it to someone on here. Never had him kill anything tho and no holes in shells

[JohnnyReeftank]

I'vve heard it in my tank too.....usually after the lights go off. I later discovered that a few of my Trochus snails were twisting around in their shells pretty violently... and it made a clicking sound on the glass....mystery solved...for me at least