Can anyone help me identify this crab? Can’t find it on Google search the crab was a gift from its previous owner but previous owner said he bought him and added him to a tank and never saw him again inside the tank until today when he was transferred to my tank. He has completely lost color and I am worried he’s dead.I am BRAND NEW to the hobby and don’t know anything about crabs see the pics below and let me know if he didn’t make the transfer. I attached a before and after of his color.