Thinking I might add a small crab to the tank but what kind do you recommend? I don't want any that will kill fish or get into coral. here is my livestock list as of now.\n \n2 Ocell. clowns\n1 lawnmower blenny\n1 allen's damsel\n1 Mandarin\n1 royal pincushion urchin\n6 snails (don't know what kind)\n1 conch\nvarious mushrooms\nunidentified soft cocral\npulsing xenia\nsponge \nLOTS of brittle stars\nFeather duster\nPaly's\n \n \nI'm not sure what other fish I'll be adding, I just kind of find one I like that is compatable with what I have. So crab just needs to be friendly as I also plan to add more soft corals in a few months. I haven't done much research on crabs but I'm guessing they are night stalkiers so probably won't see them? and do they require special feeding?