Depends on the crab, but as far as i am aware the majority of crabs do live in brackish water- Brackish water is water inbetween being freshwater and marine, so has a marine salt content in it but not as much as a marine tank normally would .
Depends on the crab, but as far as i am aware the majority of crabs do live in brackish water- Brackish water is water inbetween being freshwater and marine, so has a marine salt content in it but not as much as a marine tank normally would .