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Like many other rainbows, occurs in a number of geographic variations. It is a wide spread species ranging from the Kimberley region and the northwestern Northern Territory, to northern Western Australia. It tolerates broad water conditions and is a hardy species. Best kept in a planted tank with plenty of open swimming space. 

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Features of Australis Rainbowfish:

  • 1-2 broad, dark mid-lateral stripes
  • Body has overall sheen of iridescent purple or blue
  • Red to orange and yellow tail and fins
  • Males deeper bodied and are much brighter than females
  • Peaceful community fish with fish of similar size & temperament
  • Grows to 8-10cm


Tank Mate Compatibility:

Australis Rainbowfish are peaceful community fish that prefer to swim in groups of 6 or more. Best kept in a ratio of one male to two females. They can also be kept with other peaceful community fish and Rainbowfish of similar size. 

Here’s a list of some of the best tank mates:



Australis Rainbowfish are omnivore's. Feed protein rich foods such as high-quality flake foods and small pellets. For healthy fish, ensure a varied diet. This species enjoy live foods such as bloodworms, blackworms and brine shrimp. They also feed on algae and spirulina based foods. Fresh vegetables such as lettuce, kale, zucchini and cucumber can be provided. 

Check out our extensive range of aquarium fish foods.


The Best Aquarium Size for Australis Rainbowfish:

Best suited to a longer aquarium as they are active and energetic swimmers. An aquarium 3ft or larger is recommended. They are also well known jumpers, thus their aquarium should be well covered. 

Check out these suitable aquarium brands:

After an Aquarium for your fish? Browse Aquarium Tank Selection here.


Australis Rainbowfish Tank Setup:

Aquarium Filtration for Australis Rainbowfish

A good filtration system is necessary as they enjoy clean and clear waters with a slow flow rate. Ensure your filter has an adequate flow rate to effectively remove waste from the aquarium.

Shop our comprehensive range of aquarium filters here.

Aquarium Heater for Australis Rainbowfish

This fish enjoy temperatures between 22 - 28° C. If you are unable to maintain this temperature naturally, use an aquarium heater. Aquarium heaters also stabilize water temperatures.  A thermometer is recommended to monitor the water temperature.

Get yourself a new aquarium heater here. 

Aquarium Lighting for Australis Rainbowfish

Australis Rainbowfish are happiest in a dimly lit environment. We recommend LED aquarium lighting with adjustable brightness to ensure the light level can be altered for happy fish. If using moderate regular lighting, broad leaf and floating aquarium plants can offer shaded areas.

Need aquarium lighting? View available aquarium lighting here.

Substrate for Australis Rainbowfish

Australis Rainbowfish enjoy dark substrates that mimic their natural habitat. Aquarium gravel and sand is suitable. 

View our range of aquarium substrates here.

Aquarium Plants for Australis Rainbowfish

Australis Rainbowfish prefer spacious planted aquariums with medium to large plants, including lots of floating plants. The lake in which they are found is heavily vegetated with lilies. Plant the background with tall growing plants, leaving the foreground an open space for swimming.

Interested in live plants for your aquarium? View our range of live aquarium plants here.

Aquarium Decorations Australis Rainbowfish

Rock & wood can be placed in the aquarium to mimic natural habitats and provide hiding locations to retreat to and reduce stress. Rainbowfish that are less stressed show brighter colours.

View our large range of aquarium decorations here.

Additional Information

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Preferred Water Parameters :