Hole in red claw crab leg

Jan 26, 2017
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I got my red claw about a week ago, and I just noticed that he was missing his backmost right leg, and the next leg has a small hole in it. First, will the leg regenerate? And second, should I do something for the hole in his leg? I have no idea what caused it, or if he has a disease. His behavior hasn't changed that much, and he's still pretty active.

This is my first crab, so I'm pretty inexperienced with this stuff. Thanks for the advice!
 

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