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The Purple Harlequin Rasbora is a striking variant of the wild Harlequin Rasbora, but sports shades of purple across the body. The Purple Harlequin Rasbora is a peaceful shoaling species and enjoys a planted aquarium in groups of 8 or more. Suitable for smaller fish tanks, and less commonly seen then the regular Harlequin Rasbora.

They prefer lower light levels and densely planted aquariums with some open swimming space. Purple Harlequin Rasbora's tend to show colour best when conditions are ideal, with males being brighter. They are a timid species and will gain confidence with lots of hiding spaces and in groups.


Features of Purple Harlequin Rasbora's:

  • Shades of purple across the body with with classic Rasbora "triangle" towards the rear 
  • Male Dwarf Rasbora's are slimmer & brighter than females
  • Active during the daytime & rest at night
  • Grows up to 5cm

The Best Aquarium Size for Purple Harlequin Rasbora's:

The minimum tank size for a small group of Purple Harlequin Rasboras is 25L. The Purple Harlequin Rasboras will occupy the top to middle water column in the aquarium.

Due to their small size, smaller aquariums will accommodate this fish, however we always recommend going with larger aquariums if your budget allows. 

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

Tank Mate Compatibility:

The Purple Harlequin Rasbora is a shoaling fish and should be kept in schools of 8 or more. This species finds security within the group. They are a timid species that do best with other small shy species of fish. 

Great tank mates for Dwarf Rasbora's include:

 Coburg Aquarium specialize in a large range of species of live fish.

Feeding :

Purple Harlequin Rasbora's have tiny mouths so keep this in mind when selecting food. We recommend feeding three times a day a combination of pellets or flakes, live or frozen food like brine shrimp, & bloodworms.

Check out our extensive range of aquarium fish foods.


Purple Harlequin Rasbora Fish Tank Setup:

Aquarium Filtration

Naturally found in slow moving streams, mimic the Purple Harlequin rasbora’s natural environment by using a good aquarium filter that won’t create strong water movements. They are sensitive to water changes and fluctuations in water quality, so ensure adequate filtration.

Browse aquarium filters here.


Aquatic Plants for Purple Harlequin Rasbora's

The Harlequin Rasbora is naturally found in heavily vegetated water systems and finds security and comfort in heavily planted aquariums. It provides shade & spaces to hide to ensure happy fish. 

Interested in live plants for your aquariums? Browse live plants here.

Tank Decorations for Purple Harlequin Rasbora's

Purple Harlequin Rasbora's enjoy black water aquariums and acidic water. The colour of fish are enhanced when conditions are ideal and fish are less stressed. Add driftwood and natural decorations that release tannins to mimic their natural environment.

Check out our Aquarium Ornaments.

Substrate for Purple Harlequin Rasbora's

Dark coloured substrates enhance the colour of the fish and help lower light levels, reducing stress. 

A variety of Substrates are available at Coburg Aquarium. 

Additional Information

Fish Keeping Snapshot :

Preferred Water Parameters :

Aquarium Set-up Service:

Our design team enables us to create the tank you desire, install your tank where you wish to and provide a maintenance service to ensure everything runs smoothly. We can create almost any aquarium from the small home aquarium to large commercial aquariums for offices, hotels or restaurants. Coburg Aquarium, Australia's leading aquarium shop.

Please contact us if you need any custom tank services.