I was doing an inventory on my tank today and I saw my lifeless emerald crab behind rocks. I was so upset as I've only had him a month. I netted it and gave him a proper toilet flush burial.
I then googled, why did my emerald crab die? I found nothing then found a thread on here about checking the tank as he could have molted. So I went in with my Atomic Beam light and checked every nook & cranny. Then surprise, I found him hanging under a rock munching on Chaeto. He was also twice as big. My LFS never told me crabs molt. I have ghost shrimp in my tropical and they molt but as a beginner in SW, I never knew crabs molt too. So thanks to this forum, I'm a happy girl today and apparently I flushed an exoskelton.