I read recently that a couple of the hermit crabs can be kept in brackish water, if properly acclimatized. Specifically mentioned were Clibanarius vittatus (the common or green hermit crab), and Clibanarius tricolor (the Caribbean or blue-legged hermit crab).

Not being one to accept whatever I read on the internet as gospel, I'm looking for a second (or third, fourth, or fifth) opinion. Anyone know if it's true?