Empty Limpet shells = mantis?

[jenlovesty]

A friend gave me his 58 gallon reef aquarium that he had set up for a couple of years. I added a couple of limpets from my 55. I notice today that the 2 limpets I put in are dead, shells empty, laying next to each other.

Could it be a mantis? I have a mantis in another tank, and he loves limpets.

What else would kill limpets?

 

[justinl]

lots of things eat limpets. do you hear clicking in the tank during the day? are the limpet shells broken up?

 

[DanInSD]

Limpets also just die...

 

[DanInSD]

Sorry, that wasn't very helpful. A limpet attacked by a mantis would have holes at the least, and would be in pieces, at worst.