I'd wait to hear from John, Kurt, or one of the other more experienced/knowledgeable members on this one but, from what I have read and based on a catastrophic personal experience it's never a good idea to keep frogs of different species in the same enclosure. Maybe your situation is different because they are all from N America but I don't know. Anyway the sound is nice, I have 1 white's about 30 feet away 2 american green tree frogs, and they croak like crazy at night time, however I'm a light sleeper and I am often awaken by the noise and it always takes me a good 10 15 seconds to figure out whats going on!