Catching the Mantis

KAMIEO

New member
My tank has been up for a month and a half. When I first got my live rock, I found some pistol shrimp in the shipping box and put them into the tank with the live rock. I was hearing some popping noises coming from the tank, but could not see anything, so I assumed it was just the pistol shrimp. At least I did until some of the snails went missing. Looking in the tank, you would have thought it was a war zone. Snail shell frags all over the place. I even have a poor hermit crab that is missing half his shell.

Luckily during the superbowl, I got a break when I spotted a small red mantis about 1/8 wide and 1 inch long scurrying across the rock. Now riddle me this, how can something so small cause so much damage? I mean we are not talking about holes in the shells. I talking about shells reduced to rubble!!

The next day I decided to set a trap out of an old spice jar, but the only thing I caught was some hermit crabs.

Well last night, while peering into the tank and building a water bottle trap, I saw a movement. Watching in awe, I saw this 3.5ââ"šÂ¬Ã‚ Mantis pickup a Ã"šÃ‚¾Ã¢â"šÂ¬Ã‚ snail and carry it behind a rock. Seconds later the snail was no more. Seeing the direction the Mantis went I symmetrically moved the surrounding rocks to the other side of the tank until there was only the big on he went behind. I grabbed the rock and put it in a bucket. I tried to flush him out with freshwater to no avail. So now, the rock sits in the quarantine tank. Iââ"šÂ¬Ã¢"žÂ¢m hoping heââ"šÂ¬Ã¢"žÂ¢s actually in there and still not in the main tank. All the carnage makes sense now, and yes, I will be keeping him if I catch um.

Always fun,
Kamieo
 
Re: Catching the Mantis

My guess is that there is more than one in there. Unfortunately you only saw the little one.
 
3.4"! Where is the rock from? Might be G. chiragra...probably a large Gonodactylid. Post pics once you catch him, and I might be able help more.
 
At least I know he's in the QT. After not seeing anything all day I decided to stick a per in the hole I suspected him being in, and sure enough my suspicions were confirmed with a healthy crack.

As for the size of him I really can't confirm since I only saw him the one time hauling a snail back to his pad. The Rock is from the Gulf or Keys though so I doubt his the kind you suggested.

Anyway, when he decides to show himself I'll snap picture and post it.
 
Yeah, I believe he's likely either a Neogonodactylus species or large Gonodactylid.
 
To get it out of the rock try some carbonated beverage. I had 3 in the live rock I got from TB Saltwater. I placed the rock the mantis was hiding in on a tray and poured Diet Coke in the hole. The carbonation drives them out. Let the rock drain and rinse with saltwater before returning to the tank. I donated the mantis to the LPS.
 
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