The fresh water crab lives in fresh water, water without salt. Salt water crab has gills that process the salt away. And those stay in salt water places like hmm oceans
fiddler crabs drink fresh water.
depending on the species both
it is close to endangered
NO.
It is becoming less common but is not yet endangered.
No hermit crabs need distilled water for fresh water (which they drink), and need SEA salt water for them to bathe in (so the exoskeleton gets stronger)
No
crab
Usually at the bottom of the sea.... they are bottom-dwellers from saltiest water to the almost fresh water of the back bays.
Short answer: No! The Coconut Crab has become a sensation due to a picture of a giant crab climbing a trash can which is circulating on Facebook. Some comments claim the crab is delicious while others jot down that it is becoming endangered. This couldn't be further from the truth. The species is experiencing a population explosion and far from endangered. The meat of this crab is said to be sweet and lucious. Enjoy!
I'm assuming you have access to a fresh water crab because a Betta will not be able to live in salt water. The crab will attempt to catch and eat the slow moving Betta. It is only a matter of time before the Betta is killed.