I don't know for sure if any actually do it in the wild, but I'm told what I have is a Hysterocrates crassipes. (Which I guess is the pet-trade H. gigas)
Bill
I will be attempting this...I'm using a 20gal for now with a large water area until I get the larger one built. I will be using a 4.5' x 2' tank with a creek and large pond...the creek will be flowing but the pond will be still (imagine a koi pond you might put in your back yard but on a smaller scale). With live plants, drift wood, etc... The female I have is currently 6". I'm hoping to have the larger tank done in the next 2 weeks or so...maybe sooner. I'll give updates and pics...