It was once a common species, but serious declines have occurred in sections of the range (Mahony 1999). Ehmann and White (1997) noted that in New South Wales the species had disappeared from sites in the central and southern highlands. It is currently widespread throughout the Murray River valley but has disappeared from a number of sites along the Murrumbidgee River (Mahony 1999) and there are no recent records from the Monaro District near the Victorian border (G. Gillespie pers. comm.). It persists in isolated populations in the greater Melbourne area, and isolated populations are known from a few sites in central Victoria and Gippsland. A similar decline has been noted in Tasmania, and it is now almost absent from the midlands of Tasmania. In New Zealand, where the species is introduced, there are many thousands, although local declines due to chytridiomycosis and/or introduced Gambusia fish have been observed.
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