Emerald crab missing, can't find it

Queeery

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Recently picked up a used tank with just a clownfish and a couple of coral pollops, about a month ago I got a couple of turbo snails, a couple of hermit crabs, and an emerald crab. The emerald was doing great for the first couple of weeks, very active and munching away at the algae that I had been allowing to build up. About two weeks ago I started to clean up and remove a large majority of the green hair algae manually. Since around that time I haven't seen the emerald a single time. I've looked everywhere I can think of, but it seems to have disappeared entirely. Any suggestions?
 

Jekyl

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I go weeks without seeing mine
 
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Dav2996

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They hide when molting. Sometimes they get eaten by somthing else. If you really want to find it out some Nori to a clip near the sand the next day you might see it. Mine used to love Nori but I got rid of him because he ate coral.
 
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TheBear78

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Unless you are able to clearly see every part of your rockwork (assuming you have some) I suspect that he/she has just found a spot with lots of food.
As @Jekyl mentioned, they hide away for long spells. I have four but only see one or two maybe once a week.
 
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parclife

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Prob hiding in the rock somewhere, how about when the tank lights go out? That’s when mine really go wandering and picking.
 
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codenfx

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When I first bought 2 I never seen them again after a week thinking it’s dead so I bought another 2. One day I saw all 4, that tells me how good they’re at hiding within the rocks. now usually see 1-2 out in the open once or twice a week.
 
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Tray21

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Mine likes to hide underneath my bubble tip anemones and has found other places to hide. I may go weeks without seeing it.
 
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