Heres a story about a LFS that had one in stock... The crab lost its anemones and got real timid. The shop owner felt bad for the little guy so he stuck him in a tank full of aptasia (the store breeds berghia nudibranches which feed on aptasia. this is the food supply tank for the berghia.). He said he saw the crab scuttle towards an aptasia, clip it off the rock, stuck it on its claw and trimmed it down to size. It tried to do the same for the other claw but since it was already holding something, it didnt do quite as good of a job as the first. He said he wasnt sure if he'd want to sell this to a customer since it is aptasia on his claws so he decided to keep the crab in that tank. Interesting, eh?