Think you are right but I only used the signs for identification and the Australian tree frog was the only species for which I found a sign ( althrough not on the enclosure in which I saw this animal because on that one no sign at all was present ). By checking ZTL I found out that Terrazoo also should have the White-lipped tree frog and it looks more to be this one. Thanks for the correcton @WhistlingKite24 !
