they hang upside down from rocks all day. I even saw mine doing what appeared to be the same as a cleaner shrimp to my lawnmower blenny. It was weird, since I've never seen anyone say that peppermints clean fish. He also eats food that hits the bottom before the fish get to it, he ate 4 1mm NLS pellets the other day. IMO, a great addition to the CUC
EDIT: Moved to Saltwater Reef Aquaria