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[ARRIVED 1-MAR-2025] Harlequin Rasbora 3-4cm

Description

The Harlequin Rasbora is an extremely desirable aquarium addition thanks to its gorgeous metallic coloration and ease of care. It’s not difficult to see why so many hobbyists treasure it. A large school of Harlequin fill the upper areas of the aquarium with movement and colour so lively and vibrant that even non-hobbyists marvel at the display.

They have black “pork chop” shaped patch and beautifully lustrous copper/orange body. The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. The patch on the male fish is slightly rounded at the bottom with an extended tip. In contrast, the patch on the female Rasbora is straight. The females larger than the male.

They do best in an established planted aquarium with open areas for swimming. The Harlequin Rasbora should be kept in schools of 8-10 individuals and housed with other small, peaceful fish. The mild nature of the Harlequin Rasbora makes it a great community fish.

Rasbora heteromorpha generally spawns on the undersides of broad-leaved plants. A breeding tank with shallow, warm, acidic, soft water with broad-leaved plants should be set up. To encourage spawning, pair a young (9-12 months old) female Harlequin Rasbora with a two-year old male and offer live food items. After spawning, remove the parents and keep the aquarium dark until the eggs hatch (after about 24 hours). Feed the fry infusoria.

An omnivore, the Harlequin Rasbora does well on a diet of prepared flake food, as well as freeze-dried bloodworms and tubifex.

Approximate Purchase Size: 1/2″ to 1″

[ARRIVED 1-MAR-2025] Harlequin Rasbora 3-4cm

Product form

SKU: 26025

Out of stock

$7.00


All prices include GST
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    Description

    The Harlequin Rasbora is an extremely desirable aquarium addition thanks to its gorgeous metallic coloration and ease of care. It’s not difficult to see why so many hobbyists treasure it. A large school of Harlequin fill the upper areas of the aquarium with movement and colour so lively and vibrant that even non-hobbyists marvel at the display.

    They have black “pork chop” shaped patch and beautifully lustrous copper/orange body. The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. The patch on the male fish is slightly rounded at the bottom with an extended tip. In contrast, the patch on the female Rasbora is straight. The females larger than the male.

    They do best in an established planted aquarium with open areas for swimming. The Harlequin Rasbora should be kept in schools of 8-10 individuals and housed with other small, peaceful fish. The mild nature of the Harlequin Rasbora makes it a great community fish.

    Rasbora heteromorpha generally spawns on the undersides of broad-leaved plants. A breeding tank with shallow, warm, acidic, soft water with broad-leaved plants should be set up. To encourage spawning, pair a young (9-12 months old) female Harlequin Rasbora with a two-year old male and offer live food items. After spawning, remove the parents and keep the aquarium dark until the eggs hatch (after about 24 hours). Feed the fry infusoria.

    An omnivore, the Harlequin Rasbora does well on a diet of prepared flake food, as well as freeze-dried bloodworms and tubifex.

    Approximate Purchase Size: 1/2″ to 1″

    Live Arrival & Ordering FAQ

    Do you offer a live arrival guarantee?

    Yes. All livestock is covered by our Live Arrival Guarantee.

    In the rare event of DOA, please contact us promptly with clear photos of the livestock in the original unopened bag.

    Please review our full DOA and store policies before purchase.

    Can you ship to all states in Australia?

    No. Due to state restrictions, we cannot ship livestock or live plants to WA and TAS.

    What should I check before ordering?

    Before placing an order, make sure:

    • Your tank is fully cycled and stable
    • Your aquarium has enough space for the species
    • Your current livestock are compatible in temperament, size, and requirements
    • Your water parameters, habitat, and temperature suit the species
    • You are not adding too many fish at once
    What should I expect when my fish arrives?

    It is normal for fish, shrimp, or snails to look pale, stressed, or less active after shipping.

    This is temporary. Most livestock will settle and regain colour within a few days.

    How long does it take for fish to settle in?

    Most livestock will take 3–7 days to fully adjust to their new environment.

    Should I feed my fish immediately after arrival?

    No. We recommend waiting 24 hours before feeding to allow them to settle.

    If you already have fish in your tank, feeding them before introducing new arrivals can help reduce stress.

    Why do fish sometimes struggle after being added to a tank?

    In most cases, issues are caused by tank conditions, not shipping.

    • Uncycled or unstable tanks
    • Poor water parameters
    • Overstocking
    • Unsuitable tank mates
    What is Nano Tanks Australia’s main tip for new livestock?

    Most livestock losses happen in immature or unstable tanks, not during shipping.

    If your setup is not fully established, the risk to new arrivals is significantly higher.

    Not sure if this fish is right for your setup?

    If you are unsure whether this species suits your setup, contact us before ordering and we’ll help point you in the right direction.

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