Armies of green tree frogs are popping up in and around Brisbane as the brightly-coloured native thrives after rain.

In contrast, the ruddy tree frog (Litoria pyrina) thrives in the humid tropical zones of Queensland and New South Wales, demonstrating a remarkable adaptation to vastly different environments.

An abundance of green tree frogs have been spotted across the Gold Coast after heavy rainfall hit the region.

A leading koala researcher says koala populations in regional Queensland, outside of the south-east, are being largely ignored and need conservation strategies.

The first 100 MRCCC data sheets submitted will be rewarded with a free copy of the Queensland Museum's "Frogs of South-East Queensland".

Queensland has been hit by torrential downpours since Friday, with Brisbane suffering 677mm of rainfall in three days and flash flooding hitting the south east of the state along the Gold Coast.

As parts of north, central and western Queensland brace for flooding, more downfall is on the way for the region most impacted by ex-tropical cyclone Alfred.

A green tree frog in Queensland looked the picture of contentment after installing itself right under a drainpipe after a downpour.Photographer Joep Buijs captured the scene in suburban Brisbane on ...

Queensland scientists have developed a "ribbiting" app that can identify a frog by its croak and shows what species can be found where.

It wasn’t the only species to go. Since 1979, ­scientists had reported that frogs in south-east Queensland were declining.

University of Queensland researcher Hugh Possingham said Brisbane and surrounds had the best frog fauna of any city in Australia, with 40 to 50 species.