Northern Dwarf Tree Frog: A Tiny Australian Frog with a Big Voice
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Meet the Northern Dwarf Tree Frog, a small native Australian frog found in wetlands, grasslands and floodplain habitats across northern Australia.
The Northern Dwarf Tree Frog is one of Australia’s smallest and most charming native frogs.
Also known as the Northern Sedgefrog, this tiny species is often found around wetland areas, marshes, grasslands, streams, billabongs and floodplains across northern Australia.
Despite its small size, the Northern Dwarf Tree Frog plays an important role in local ecosystems and is a fascinating species for wildlife lovers, frog enthusiasts and anyone interested in Australia’s native animals.
What Is a Northern Dwarf Tree Frog?
The Northern Dwarf Tree Frog is a small native Australian tree frog.
Its scientific name is Litoria bicolor.
As the name suggests, this frog is tiny compared to many of Australia’s better-known tree frogs. Adults usually grow to around 3 cm in length, making them much smaller than species such as the Green Tree Frog.
They are slender, delicate-looking frogs with long limbs, a pointed head shape and small toe pads that help them climb through reeds, grasses and vegetation.
What Does a Northern Dwarf Tree Frog Look Like?
Northern Dwarf Tree Frogs are usually green, brown or a mix of both.
Young frogs are often browner in colour and may become greener as they mature.
Common features include:
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a small, slender body
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green or brown colouring
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a bronze or brown stripe along the side of the body
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pale or white markings below the stripe
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orange colouring around the groin and thighs
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relatively long limbs
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small toe pads for climbing
Like many frogs, their colour can vary depending on age, environment, mood and conditions.
This can make frog identification tricky, which is one reason frog calls are often useful for identifying species.
Where Do Northern Dwarf Tree Frogs Live?
Northern Dwarf Tree Frogs are found across parts of northern Australia.
They are commonly associated with:
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grasslands
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marshy areas
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wetland vegetation
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permanent and semi-permanent streams
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billabongs
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floodplains
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temporary ponds after rain
They are especially linked with areas that hold water during the wet season.
During drier periods, they may shelter in vegetation where humidity is higher and conditions are more suitable.
Why Are They Called Sedge Frogs?
Northern Dwarf Tree Frogs are sometimes called sedge frogs because they are often found among reeds, sedges and other wetland plants.
These plants provide:
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shelter from predators
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access to insects
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humid microhabitats
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calling sites during breeding season
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safe places near water
Their small size and green colouring help them blend beautifully into wetland vegetation.
Tiny frog, excellent camouflage. Nature does not muck around.
What Do Northern Dwarf Tree Frogs Eat?
In the wild, Northern Dwarf Tree Frogs feed on small invertebrates.
Their diet may include tiny insects and other small prey found around wetland vegetation.
Like other frogs, they play a helpful role in controlling insect populations and form part of the food web for larger animals.
When Do Northern Dwarf Tree Frogs Breed?
The breeding season usually begins with the arrival of summer rain.
Rain creates temporary pools, flooded areas and wetland conditions that allow frogs to breed.
Males call from elevated positions around breeding sites, often perched among vegetation near water.
Their call is described as a sharp, repeated sound, often written as something like “wree-e-eck” or “reek”.
Female frogs lay small clusters of eggs on or near submerged vegetation in temporary water bodies.
How Long Do Tadpoles Take to Become Frogs?
After eggs hatch, tadpoles develop in water before transforming into tiny frogs.
For Northern Dwarf Tree Frogs, tadpole development can take around 70–80 days, depending on conditions such as temperature, water availability and food.
Temporary ponds need to last long enough for tadpoles to complete this process, which is why seasonal rain is so important for many frog species.
Are Northern Dwarf Tree Frogs Good Pets?
Native frogs are protected wildlife in Australia and should not be collected from the wild.
In Queensland, native amphibians require the appropriate wildlife licence to keep legally, and frogs should only be obtained through legal, captive-bred sources where permitted.
If you are interested in keeping frogs, always check your local wildlife laws first and speak with experienced keepers or licensed suppliers.
Wild frogs belong in the wild.
How Can You Help Native Frogs?
You can support native frogs by creating safer, healthier outdoor environments.
Helpful steps include:
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avoiding unnecessary pesticide use
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keeping waterways clean
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protecting wetland plants
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providing frog-friendly garden areas
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keeping cats contained where possible
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never moving frogs between locations
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never releasing unwanted pets into the wild
If you find an injured or displaced native frog, contact a licensed wildlife carer or local wildlife rescue organisation for advice.
Why Frogs Matter
Frogs are important environmental indicators.
Because they rely on clean water, healthy habitat and suitable weather conditions, changes in frog populations can tell us a lot about the health of the environment.
The Northern Dwarf Tree Frog may be small, but species like this are part of the rich biodiversity that makes Australia’s wildlife so special.
Learning about native frogs helps us appreciate and protect the habitats they depend on.
Want to Learn More About Native Animals?
At Aquabird Pet Centre, we love helping people learn more about reptiles, amphibians, birds, fish and other fascinating animals.
Follow the Aquabird blog for more species spotlights, care guides and educational articles about the animals we share our world with.
