I think coral bandeds are pretty hit or miss. I have a rather large one and a few peppermints in my 24g and everything is peachy. However, I do know of people who have had other shrimps completely annihilated by coral bandeds. I don't have any experience other than keeping peppermints with it, but I would be wary of adding the harleys, just to be on the safe side. Though, it seems to me that they only go after things about their body size and smaller, because I've seen them in systems with cleaners/bloods. (Don't use this observation as a go-ahead to put the harleys because I really don't know, it's just an isolated incident that I have experienced). I'm actually considering giving away my coral banded because he is always in his cave, and I never get to see him except for <3min when I feed. I'd rather have something else that spends more time out in the open (like a few sexy shrimp), but there's no doubt that he would:eat: