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why are my fiddlers losing their claws and legs? Answered

All my male fiddlers are losing their claws and legs. I've had them for quite a while, about 6 months, and I purchased them at Walmart. Could it be age related, or a problem with the water?


They're probably fighting.


Do you have them in fresh or brackish/saline water? The pet store might have had them in fresh water, but they need sea salt to stay healthy.

Could they be fighting? Males will fight over territory when crowded; my hermit crabs would sometimes rip each others legs off (different species, but similar aggression issues).

Here's a good online reference to general fiddler crab care which might help you diagnose the problem: