Things like decorator crab

Are there things that like the deco crab will put sponges, anemones, polyps, etc on there back but are reef safe? PLEASE

 

Ok, so just curious but if your looking for something that takes sponges, polyps, etc., cuts them down and puts them on their shell, how is that reef safe? And what's the difference between that and a decorator crab?

 

well it doesnt kill them and it helps in spreading it around the tank id be okay with that

 

KOgle has a deco crab in his reef tank and it has been doing fine. Only comes out at night so don't plan on seeing it all the time.

 

Not exactly the same but pincushion urchins will pick up pieces of rubble, sometimes coral etc and carry it around on their backs and try and use it for camo.
Like this one: Saltwater Aquarium Inverts for Marine Reef Aquariums: Pincushion Urchin, Blue Tuxedo

 

well im trying to decide whether or not to try a decorator crab, some peoples are peaceful
would it help if I put one in my refugium with a cheap small fish to see if he was agressive or not?????????