The Red-crowned Toadlet is one of Australia’s smallest frogs (less than 3cm). Unlike other frogs, their fingers and toes are not webbed.

Their population is only found in the Sydney basin, in the sandstone region around streams that do not flow all year. They are often seen on plateaus which fill with autumn rains, important for breeding. They are a localised species, restricted to certain breeding areas and are listed as vulnerable in NSW.

They are also very sensitive to water pollution and pH levels (acidity).

The Toadlet has a soft squelch-like ‘eeeek eek’ call, that is repeated several times.