Advertisement Hi, I recently bought a couple of crabs for my daughter, they where advertised as moon crabs but online search for moon crab brought up not nadda. So I took a pic and hopefully someone can help me out with some info. I was also told they would go well in the same cage as her halloween crab..? cage is a 55g aquarium. 8in of sand leading into a 2 inch of water with feeder fish ....they seem to really like it, full spectrum lighting on a 12/12 automated cycle with additional land crab food supplement.and infraed heat lights. and under tank heat tape under the side with water keeps water at 78degrees f.