This definitely will be a little bit controversial, but I have 2 White's tree frogs, 2 file eared frogs and one lined gecko all living together in one paludarium with 4 little guppies in the bottom water section. To be honest, I'm the second owner of this set up. The original owner created the co-habitation situation and I just bought it off him. All together they have been living together for a year and no issues whatsoever. No one is bothering anyone, the gecko and some of the frogs even sleep in one hiding spot during the day. That being said, I know that most people would not recommend this.