Can it be saved ? : Back from the brink of extinction: hunting for the world's rarest frog | Australia news | The Guardian
I suspect that no one would dispute the Rabbs' Fringe-limbed Treefrog (Ecnomiohyla rabborum) is actually the world's rarest - though the Corroboree may be one of the rarest in the wild.
A mate of mine from Taronga Zoo has been involved in the captive rearing and release of hundreds of frogs and spawn into the wild, and reported just a couple for days ago they have found spawning in the wild from eggs they released three years ago. A real positive leap ahead. Hix
Whenever I see pictures of Southern Corroboree Frogs, I feel reminded of this photo: http://upload.wikimedia.org/wikipedia/commons/8/8c/Feuersalamander_Fehlpaarung.jpg I knew something would come out of that!