About a month ago I bought a mantis at the lfs. He/she was small about an inch long. It really didnt have that much coloration, more of a white body. Anyway I bought it for 10 bucks and put it in my sump w/ref in a 30 gal. Anyway I have been looking and looking for it but havent seen it, I even got to the point of digging up the sand bed to search for him. The only other resident is "sump"thing (a hairy hitchhiker crab). The crab is about 3/4 the size of the mantis. My question is; did the crab kill him or did he scale the baffles and meet Mr. Return pump?