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Is This Hermit Crab Shed?

stanleo

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I keep finding these in the tank. This one I was able to reach and get out of the tank so I could take pictures of it. I have seen them before and in the last couple weeks I have found 3. I think they are sheds but I want to be sure my hermit crabs aren't dying. I counted 13 crabs today but in the past I have counted 18. There are a lot of places for them to hide. 
 
I took several pics if these aren't helpful. The bottom seems to be split and the middle empty like a snell but the legs are dense, not like a shrimp shed would be. 


 

sawickib

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Looks like it to me, back is missing because its tiny little legs back there lol
 

Donya

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This is one of those things that's far easier to tell with absolute certainty with the thing in-hand than by pic, since there are differences in weight and floppiness. Although a molt is more likely, the problem is that it can look pretty similar when the body has been cleaned out by something like a Nassarius snail if you have any of those in the tank. If the limbs are hollow inside and the eyes are clear then it'll be a molt.
 
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stanleo

stanleo

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It was very floppy and quite fragile. I didn't check the limbs and I couldn't find the eyes but then again I didn't think to really look that hard.
 
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