Short answer: None.

Long answer: Amphibians and reptiles should not be kept together in the same enclosure. Diffenet species of reptiles and amphibians should not be kept in the same enclosure. Only 1 species per tank. Amphibians produce toxins (All amphibians, not just the noted ones, most are only mild) that slowly kill off the other animal. Reptiles don't produce these toxins, but reptiles are generally more aggresive and/or territorial. Also, please look at the previous threads on this topic before posting another. Martin just posted recent ones.