Loud Clicking noise coming out of the tank

[paddyob]

Pistol. Mantis clicking would be shells being broken open. If you have no broken shells its most likely a pistol.

I have had one 5 years. Never seen it but click click click.

I believe he is responsible for my missing harlequin and 3 peppermints.

Never bothered any fish.

[globaldesigns]

I have those sounds also... Come and goes. Usually lots of clicks, then nothing for awhile (weeks or months) then it starts up again for awhile, usually in the evenings, when the lights are out.

[Midway]

yeah, maybe that explains two of my cleaner shrimps went missing some time ago.

[Midway]

Now that I remember, at the beginning when I brought all my LR for my first tank, I saw a small "lobster" like little creature now and then. kinda brownish color, but I remember it looked like a little lobster.

[doch]

Originally Posted by Midway

Now that I remember, at the beginning when I brought all my LR for my first tank, I saw a small "lobster" like little creature now and then. kinda brownish color, but I remember it looked like a little lobster.

Yup... pistol.

[Corbin]

just in reply to people saying no broken shells means no mantis... there are tons of speices of mantis, i have one in my reef thats only about a inch long if that, he doesnt go after any inverts, he takes food from me if i put it at his hole. but he clicks all day long, the clicking is usually them just borrowing in LR

[Aquattro]

Originally Posted by Corbin

but he clicks all day long, the clicking is usually them just borrowing in LR

Yup, I've had the same thing. They smack the inside of their cave to build additions Too small to kill any crabs, but big enough that I could hear it 2 rooms away.

[evaneatspie555]

my hermits always make noise when there shells hit the glass. especially when they climb the silicon and try to escape

[ScubaSteve]

Originally Posted by Midway

yeah, maybe that explains two of my cleaner shrimps went missing some time ago.

Uh, yup... that might explain it.

I have the same thing in my tank and I've found that many things actually do it. I thought it was my pistol but when I found him dead in the sump. I've noticed my strawberry top snail do this thing where he twists and pulls himself into the glass really quick and makes a cracking sound. He's been incapacitated for the past week and I still hear it. Haven't seen evidence of another pistol or a mantis... so I leave it to one of the mysteries of the tank.. sorta like how a hawaiian rock boring urchin showed up in my tank without having put anything in my tank for over 6 months and the only thing that went in there in 6 months before that was a piece of dead rock that had been sitting dry for over a year. Weird...

[Pinchy]

Originally Posted by globaldesigns

I have those sounds also... Come and goes. Usually lots of clicks, then nothing for awhile (weeks or months) then it starts up again for awhile, usually in the evenings, when the lights are out.

Based on this comment it is definitely a mantis shrimp. Impossible to catch, i had to tear my tank apart to get mine out. This was the sole reason i bought marco rock for my new 72 bow and used the rest of the old live rock in the sump..