i am building a vivarium but not sure if i want to keep redeyyes and phylomedusa tree frogs,or maybe darts.one thing i know i want is a pleasing sound.please describe what you keep,what they sound like when they call,do they call all the time?are pairs needed or will single males call?what does it sound like?loud?annoying?pleasing? this is a major factor that will decide what i keep.thanks

