Next year I would like to do a planted aqua-terrarium, it would be half land half water with a small waterfall, and a marshy swamp style theme. I have been very interested in pet crabs and done a good amount of research on their care requirements in the past. My question is, which do you guys feel makes the better pet, Red Claw Crabs or Fiddler Crabs? I don't mind having more females than males, but i'd want atleast a couple so they aren't so lonesome. Which would be better off in the planted swamp theme? Which is more interesting and enjoyable to watch?