A local reefer gave me this guy today. I have always wanted one... such a cool crab! My worry is from all my reading a lot of people say they do not live very long (>6 months) in an aquarium setting, while a few people have said they had theirs for years. Who has had these successfully? I am wondering if I should start adding plankton to my tank again, or how to best care for it to have the best chance of long term survival. He is hiding under a rock right now, but I can see him feeding.