emerald died and dont know y...

[ryand]

ok i got an emerald about a month ago and pit it in the tank and it emediatly went to a hole that it like( or so i thought) we noticed that it never came out so we figured it came out just when we are not here.anyways today when i was looking i knowticed that it wasent attached any more that it was floting in the hole does anybody know why this could me my readings are all good ph is at proper place and rest of clean up crew is fine. just the emerald died and i dont know why any thoughts whould be great

 

[clarkiiclo]

Is it the whole crab or just the shell?
I have emerald crabs kick off every once in awhile for no apparent reason.

 

[jenn-e]

Could it be a molt and the emerald is hiding somewhere else. I don't see mine very often, just enough to know he's alive.