HCA: Hermit Crab Association

This evening when I went to do the normal feeding for my sons crabs and I noticed one of the crabs had what I thought was a crack. When I looked closer I noticed there was a bunch of tiny holes in the shell. They were not there the last time i saw him. The last few times I’ve went to feed the crabs or clean the tank he has been buried in the sand. Wasn’t sure what it was so I took the other crab out and I did separate them just in case.

I took everything out and checked to see if there was any mites but so far I have found nothing.

Can you post a photo?

Here is the photo of his shell. He was in the moss pit prior to me taking this.


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That wouldn't be caused by any kind of mites. But it is interesting. How many and what types of shells do you have for him to choose from? Is he a Purple Pincher?

Are you 100% positive this shell didn't have this damage to start? It looks like the effect of boring sponges which would have happened when the sea snail was still in the ocean.