Wondering because I would like to put some in my stonefish's aquarium so that they can clean up after the feeder fish before they are eaten (the Thing often takes a week or two to devour his rosies). I have little doubt that he would eventually eat the shrimp, too, but that's why I'm so interested in such a cheap bottomfeeder. My problem is that the Thing--the Freshwater Stonefish--is actually brackish, not freshwater. So can Ghost Shrimp live in brackish water, or are they salt-sensitive?