He needs bigger than a ten, for every inch on his shell you need ten gallons. so right now i would say at the very least a 20-40 gallon tank. It is also hard to get temps right and to get a good amount of uvb over the tank without over crowding the top of his tank. there are a few more res morphs, like the caramel albino and the super pastel, and a few more i cannot think of. VERY nice pastel, i wish i could handle a turtle right now or id have a few!