There have been a few deaths in the tank since I've had it over a year ago. Never any sign of sickness or starvation, and last time no evidence of the fish at all. During the move I took the time to search. I had thought it was a mantis or pistol shrimp because I did hear the "clicking" I guess I could still have one in there, but hadn't seen it. Anyhow, here is the little guy I found. I put him in the sump for now. I couldn't tell which one he is from Crab Hitch Hikers None of them have quite the same coloration or long antenna.