What would kill a large hermit crab?

[Doglips56]

The shell is in pieces, so I'm strongly leaning towards either mantis shrimp of bobbit worm. I'll look with some red light tonight and see if I can find anything. There was a brief day or so where a hole in the rock had what looked like small white tentacles hanging out. I thought it was an anemone but now am questioning that.

Sorry to hear this. We had an arrow crab for a bristle worm problem and he got big fast and ate our shrimp and a couple of small fish. Hauled his hungry butt right back to the lfs!!!

 

[Dkmoo]

Post a pic of the "carcass" and we can probably better check for you if its really dead or just a molt

 

[Alexraptor]

Pistol shrimps are also more than capable, and will if they find the hermits too intrusive.

 

[kdx7214]

Post a pic of the "carcass" and we can probably better check for you if its really dead or just a molt

Argh. I wish I'd thought of this, but I flushed it almost immediately. Thanks for the suggestion though!

 

[((FORDTECH))]

Argh. I wish I'd thought of this, but I flushed it almost immediately. Thanks for the suggestion though!

For future reference things like this could be put in the garbage I would not flush them or your drains will start to get clogged with things that do not decompose