Another question

[tylototriton]

The resounding answer you will receive from the Forum is no. Unfortunately, mixing species can lead to unintended consequences like stress, infection and death. It is best to keep species separate and if you do find another European green treefrog you should quarantine it for a time to insure that no pathogens are passed from the new captive to your existing one.

I'm sorry I can't be more helpful but mixing species is wholly frowned upon.

Best of Luck,
Alex