HCA: Hermit Crab Association

No, I don't. If Big Poppa doesn't behave you may have to isolate her for a few days so she calms down. I would also offer more protein and calcium, which can help sometimes.

I've moved this topic out of the Water forum. Based on your location I'm gonna guess purple pincher ( Coenobita clypeatus ) since the United States don't really have a whole lot of selection. They have big purple claws and a "shield leg" that you can see when they retract. If they're red they may be...

I’m assuming that cause of death was that Hermy never molted so PPS. I’ll be getting my new crabs in about two weeks give or take a couple days. Is there anything that can be done to make them molt or any food item that makes them think about molting? Sent from my iPhone using Tapatalk Sort of but ...

Aw, he's a little guy, isn't he? Are you sure he molted, though? I can't tell for sure from the pics, but his legs don't look as "hairy" as they usually do after a molt. Maybe he was just down "de-stressing" or just hanging out belowground for a while? How long was he down? Maybe he did, maybe he d...

Hermit crabs keep their shells on during the molt, so what you witnessed under the substrate is normal and expected. It very well could be preparing for a molt. They don’t always molt immediately after digging and may tunnel some first. A few trips to the surface for food and water is not uncommon. ...

Crabitat: Calibrating a Hygrometer https://r.tapatalk.com/shareLink/topic?share_fid=28566&share_tid=92540&share_pid=852642&url=http%3A%2F%2Fwww%2Ehermitcrabassociation%2Ecom%2FphpBB%2Fviewtopic%2Ephp%3Fp%3D852642%23p852642&share_type=t&link_source=app Sent from my SAMSUNG Family Hub Refrigerator usi...

It's up to you. The sociability of hermit crabs is debatable since they don't seem to "bond" to each other the same way many other social animals do. Anecdotally the longest living crabs in captivity have often been alone or in pairs. It more or less boils down to how many hermit crabs you'd like to...

What makes it difficult is that every crab interprets us differently and they’re not really intelligent enough to learn the way other animals can. You could try picking them up and offering a favorite treat so they associate you with food. However handling is a controversial topic and I realize you ...

Now that’s a stubborn hermit crab. Fingers crossed for you!


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He wouldn’t leave his shell to molt, crabs molt in-shell. He wouldn’t leave his shell unless something is bothering him.


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Place the crab in a container with a few appropriate shells. Add a small amount of water to the bottom to keep things moist and leave it in a dark place for a few hours. If that doesn’t work you’ll have to give manual re-shelling another go. Sent from my SAMSUNG Family Hub Refrigerator using Tapatalk

I don’t see anything that screams danger, though I would stress a varied diet with calcium sources. It could just be Post-purchase Syndrome. Also make sure there aren’t any irritants like sand in any of the shells. Regardless, that crab needs a shell. If it’s been running around naked for this long ...

If dipping doesn’t work alone, try removing everyone and rearranging the tank to reduce any sense of “territory”.

Are there any patterns you can think of, like proximity to a food dish or favorite hide?


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Hermit crabs submerge in both to maintain their shell water salinity. What many crabbers do is make pools out of Tupperware containers with ladders to climb out.


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Purple pinchers tend to eat more vegetation and less meat than other species, so what you're seeing is normal. What you could do is swap the meats out more regularly so they have new things more often, but I wouldn't be too concerned as long as some is available to them.