I also wanted different looking frogs in my tank so I got the Red Eyed Tree Frog, the Albino Red Eyed Tree Frog and the Xanthic Red Eyed Tree Frog. They are all going to be living in a 36X18X24 Exo Terra. They are all technically the same species so I don't have to worry so much about different toxins, but they do look different. I had a friend who had a pretty large tank and had Red Eyes with Darts and he never had any one frog for more than a year or two. He never knew why they would die off, they just did. I think it's better to be safe than sorry. They are living creatures here that we keep in small enclosures compared to the habitat that they should be roaming in. We do have a morale obligation to provide them with a safe and comfortable habitat. And also one as large as we can reasonably provide for their prosperity.