My wife and I always wanted to keep freshwater crabs cuz we loved seeing them scooting around above and below the water. But it was always hard to find a way to incorporate the land and sea aspect into an already functional tank. But thx to @ActiveAngel I was able to grab this Pico and divide the tank like that.. soo I've got 1 male and 1 female fiddler crab now joined in holy matrimony residing right next to our bed and now have the same wedding anniversary as my wife and i Soo happy anniversary to them and us as well( sorry for some crappy pics I bought a new phone and the camera sux)