lizards and toads

Question
can i put blue bellied lizards in the same aquarium as fire bellied toads- and how deep most the water be for the toads

Answer
I wouldn't recommend it as Fire Bellied toads can be toxic to other animals. As far as depth of water I would probably go with 3 to 4 inches of water changed out weekly. Something else that I should have clarified is that the two habitats are completely different for the reptiles than it is for the Fire bellied Toad. 'Blue belly' as you refer to I am presuming is the Western fence lizard which lives in a dry habitat while the Fire bellied toad is in a humid damp one this type of environment may cause issues with the lizard and too dry will definitely cause issue with the toads. Hope that is more clear now.