expose the click

have you tried the bottle trap? if it is multiple clicks at once it is most likely a mantis, if you have one loud click at a time it is most likely a pistol shrimp. Also I've heard pistol shrimps are MUCH louder than mantises, but I've only heard a small N. wennerae and never heard a pistol. Also if you have TBS live rock it is most likely a N. wennerae mantis shrimp
 
It is one click at a time. on occaision. I've never heard either before so I can't say it's loud or soft but it isn't as loud as I expected it to be either way.

Will the pistol shrimp come out for the treat at night or how would I identify that?

The rock is aquaculture fiji
 
Pistols and mantis are basically indistinguishable in terms of sound. I have both.

My vote would be to "wait and see". A mantis big enough to do any "real damage" -- like a peacock, large G. chiragra, G. ternatensis, etc -- would be out and about. You would definitely know about it. There would also be obvious "deaths" and the remnants thereof (smashed shells, missing fishes, all of that).

A bottle trap is a safe and easy thing to try -- no harm done. But I wouldn't sweat it either way.

There was one story here from someone who heard an occasional tapping, and freaked out until he discovered that it was a large turbo snail that tended to lift its shell up and down as it moved over the glass. The shell occasionally "thumped" the glass. Tapping does not mean "death to all inhabitants".

Have fun,
Dan
 
apparently stealth heaters can click too although mine never has. You can't distinguish pistol clicks from mantis clicks based on frequency or loudness, loudnerss depends on the size of the mantis, Have you added any LR recently? or is this something that came out of the blue?
 
Best bet is to put a red light on the tank and check it out at 3am. As others have said the human ear can't distinguish between a mantis beating the crud out of something and a peaved Pistol shrimp.
 
red light only works for other inverts. mantids have 16 colour pigments in their eayes and see way more colour than we do (measly 3 pigments). No lights would work better imo
 
Yeah, I put a new piece of live rock in with my Ciliata and I started to hear clicking noises later in the night. At first I was hoping it was a nice little mantis hitchhiker but then was a bit horrified, it being a smasher, may kill my Ciliata.

After watching the holes carefully I found it to be a little tiny pistol shrimp...hehehe...cool, pinchy has a new friend.
 
I have both pistols and mantis's, and I am here to say that a pistol shrimp about a half inch long is 10 times louder than a mantis. God their loud. If it's a N. wennerae, it probably isn't that active (or at least what I have seen from the 4 I've had). Just screw around in the tank, and it'll probably stick it's head out to see what's goin on. I hope you have a pistol, their fun to watch.

best of luck!
 
I hope so too.

I've bought 60 cents worth of shrimp so I've got pleanty of shrimp food either way.

I'll post pictures when I find out.
 
I rearranged the rocks. Didn't see anything and it got awfully quiet. Thought I'd released some nitrates and killed it. But I heard it click again. It's still alive.

So will the glass with shrimp work for either pistol or mantis shrimp catching?

Does it matter how tall it is? I've got one of those POM glasses that you get when you buy the juice. I'll try that. So if I lean it into the corner with a bit of raw shrimp that does the trick, right?

I'm a little nervous to see it be a mantis...
 
well for me i can tell if it my mantis or my pistol. It might take awhile to actually learn what is what but i can clearly tell who is making what noise... they r very different. Pistols noises are just big POPs mantis r cracks. Its hard to explain. But when my pistol shrimp pops i get a sharp sensation in my ear drum, when my mantis goes it just think "crap the heater!!!!"
Its hard, i think i am confident in knowing the difference.
Also, If its one click it would more likely be a pistol shrimp, thats all they need to kill their prey. Mantis just smash things... it would click for alot longer than once i think.
But as we can see peoples opinions vary, so i guess the only way to know if to find that little noise maker!!!
Good luck mate.
 
bottle trap

bottle trap

Hows this bottle set?

Will this work for both?

I've put in a piece of raw shrimp.

Oh, also my tank finished the cycle too.

bottletrap.jpg


The sound is coming from the rock behind the bottle.

Thanks for the help. I'll let you know.
 
take that out. you should only use WATER bottles (that have never seen soap) for the bottle trap as you can never get those kind of bottles really clean. just use a plastic one.

cut off the top, invert it andput it back in. you should have a funnel at one end now. secure the two pieces together, bait and then throw it in.
 
ok, I've used two bottles cut one top off close and the other a little long. The work together like a charm.

I've set it up.

Will this trap work if it is a pistol shrimp?

I suppose I might as well start moving my other rocks in? It seems like either I will catch it with this trap or I won't catch it at all. (I suppose there's the saline/fresh water dip? if I get desperate)

What does anyone know of this? Is it a safe bet to move my other tanks rocks into this situation?
 
Here's what I would do.

I would freshwater dip every piece of rock for a few seconds. No longer than 10, then get the rock back in. Check the water carefully, anything could have popped out that you would want to save. Second, after you get the rock back into the water, watch it carefully, I've had a mantis come out only after I put the rock back into the tank. If it is a pistol, it'll probably come out, same with mantis. The bottle trick won't work on a pistol, they wait for food to come to them, not vice versa. Unless they have a goby with them, but thats still a hit or miss thing. Good luck with your decision!

Richard
 
don't do FW dip unless you really really have to.

if you really want to do a dip, dip the rock repeatedly in SW (same params as display). this seems to work and it isn't nearly as hard on inverts like mantids
 

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