In a word, no. But of course, there are exceptions. Some say that there are species of hermits that wont attack snails. And also, if the hermits have ample shells, they really don't have reason to attack. I however, made the mistake of buying a clean-up crew from FFE, which had so many hermits I lost count. They aren't good for a DSB, which is why I am leaving them out of any future tanks. Well, maybe one or two, that would be more natural. But never, when I have been out on a reef, have I seen hermits in such dense concentrations as there are in some tanks (like mine

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Drew