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Also known as the 'Dwarf Rainbowfish", it is a smaller Rainbowfish. The Neon Rainbowfish is generally easy to keep and suited for the beginner to intermediate aquarist. It is an active community fish that enjoys a spacious planted aquarium. They occupy the mid to upper level water column and are best kept in shoals of 6 or more and a ratio of one male to two females. They are a brilliant greenish - blue with crimson red on fins and tails. Rainbow fish prefer good water quality and stable conditions.

The Neon Rainbowfish is native to West Papua New Guinea and is found in the Mamberano River Basin.


Features of the Neon Rainbowfish:

  • Tolerates broad water parameters.
  • Peaceful community fish if male to female ration is maintained.
  • Bright green-ish blue iridescent body with red fins & tail.
  • Energetic & active swimmers.


Tank Mate Compatibility:

Neon Rainbowfish are relatively peaceful community fish that prefer to swim in groups of 6 or more. It is best to keep multiple females per male, otherwise males can display aggression. They can also be kept with other peaceful community fish.

Here’s a list of some of the best tank mates for your Western Rainbowfish.



Neon Rainbowfish are omnivores and will eat flake, small pellets, live, fresh, frozen, and freeze-dried. For optimal health, provide a variety of foods, which can include high-quality flake foods, brine shrimp, and any type of worms, as well as vegetable supplements and spirulina. 

Neon Rainbowfish have small throats, ensure food particles are not too large.




Neon Rainbowfish are best suited to a longer aquarium as they are active and energetic swimmers. An aquarium 2ft or larger is recommended. They are also well known jumpers, thus their aquarium should be well covered. 

After an Aquarium for your fish? Browse our aquariums available here.


Neon Rainbowfish prefer water temperatures between 22  ⁰C - 26  ⁰C.

Looking for an aquarium heater? View available aquarium heaters here.


Neon Rainbowfish are found in shaded rivers, creeks and streams located in West Papua New Guinea. They 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. 

Need aquarium lighting? View available aquarium lighting here.


Neon Rainbowfish will tolerate wide parameters however enjoy good water quality and flow. Ensure adequate filtration and flow in your aquarium.

Explore aquarium filtration products here.


Neon Rainbowfish enjoy dark substrates that mimic their natural habitat. 

View our range of aquarium substrates here.


Plants for Rainbowfish:

Neon Rainbowfish enjoy spacious planted aquariums with medium to large plants, including floating plants. Plant out 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.


Decorations for Rainbowfish:

Rock & wood can be placed in the aquarium to mimic natural habitats and provide hiding locations to retreat to. 

View our large range of aquarium decorations here.

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Jai C.
Australia Australia


Great price, great quality! Super fast delivery!