I raised a group of about 30 marmoratus from eggs last spring. At metamorphosis, the vast majority came out of water and refused to go back. Interestingly, 7 of them stayed 100% aquatic and never came out, even though land was available. Both groups lived and grew equally well for me. By this fall, all of them were willing to live in semi-aquatic tanks and feed in water, and many of the males have crests.