Celestial Pearl Danio (Danio margaritatus) - Micro Galaxy Rasbora 3-5cm CPD

Description

Celestial Pearl Danio (Danio margaritatus)

One of the world's most beautiful nano fish, the Celestial Pearl Danio dazzles with pearl-like spots, fiery orange fins and peaceful schooling behaviour, making it a true gem for planted aquariums.

Quick Facts

  • Scientific name: Danio margaritatus
  • Common name: Celestial Pearl Danio (CPD), Galaxy Rasbora
  • Adult size: 2–2.5 cm
  • Tank size: 30L+ recommended
  • Difficulty: 🟢 Easy
  • Temperament: Peaceful
  • Best kept: Schools of 10 or more

Is this for you?

✔️ Perfect if:

  • You love nano aquariums and aquascaping.
  • You want a peaceful schooling fish.
  • You keep planted aquariums with shrimp.
  • You enjoy observing natural behaviour and colour displays.

❌ Avoid if:

  • You keep large or aggressive fish.
  • You want a fish for a fast-flowing aquarium.
  • Your aquarium is newly established.
  • You plan on keeping fewer than six fish.

Why choose the Celestial Pearl Danio?

Discovered in Myanmar in 2006, the Celestial Pearl Danio quickly became one of the most sought-after nano fish in the aquarium hobby. Their midnight-blue body is covered with brilliant pearly white spots, while the fins glow with vibrant shades of orange and red, creating an appearance that resembles a star-filled night sky.

Despite their small size, these fish have plenty of personality. Males display to one another by flaring their fins and intensifying their colours, while the school gently weaves through plants and hardscape in search of tiny foods.

Their peaceful nature makes them an outstanding choice for planted aquariums, shrimp tanks and carefully selected nano community setups.

Common mistakes

  • Keeping too few individuals.
  • Housing them with large or boisterous fish.
  • Providing very little plant cover.
  • Adding them to immature aquariums.
  • Offering food that's too large.

Care made simple

  • Temperature: 20–26°C
  • pH: 6.5–7.5
  • Diet: Micro pellets, crushed flakes, baby brine shrimp, daphnia and other small frozen or live foods
  • Water: Clean, stable and well-filtered with gentle flow
  • Setup: Heavily planted aquarium with mosses, driftwood, leaf litter and open swimming areas

Pairs perfectly with

  • Cherry Shrimp
  • Crystal Shrimp
  • Pygmy Corydoras
  • Otocinclus
  • Blue Eye Rainbowfish (Pseudomugil species)
NTA Insight:
Celestial Pearl Danios are one of those fish that reward patience. Fresh arrivals can appear shy and washed out, but once settled into a mature planted aquarium with quality food, males develop breathtaking colours. We recommend keeping at least 10–12 together—their confidence, schooling behaviour and natural displays improve dramatically in larger groups.

FAQ

How many Celestial Pearl Danios should I keep?

They are happiest in schools of at least 10 fish. Larger groups display more natural behaviour, richer colours and reduced shyness.

Are Celestial Pearl Danios peaceful?

Yes. They are one of the most peaceful nano fish available and are ideal for planted community aquariums with other small, non-aggressive species.

Can they live with shrimp?

Absolutely. They mix very well with adult Neocaridina and Caridina shrimp. Newly hatched shrimplets may occasionally be eaten, but a well-planted aquarium with mosses provides excellent protection.

Can Celestial Pearl Danios breed in home aquariums?

Yes. They are relatively easy to breed in mature planted aquariums. They scatter small adhesive eggs among mosses and fine-leaved plants, although a dedicated breeding setup will greatly improve fry survival.

Why are they sometimes called Galaxy Rasboras?

When first introduced to the hobby, they were sold as the Galaxy Rasbora because of their star-like spotted pattern. They were later scientifically classified as Danio margaritatus, but both common names are still widely used today.

Celestial Pearl Danio (Danio margaritatus) - Micro Galaxy Rasbora 3-5cm CPD

Product form
📍 In-Store Locations: GUP2-24
📦 Arrival Date: 10 July 2026

Out of stock,  

$19.00


All prices include GST
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    Description

    Celestial Pearl Danio (Danio margaritatus)

    One of the world's most beautiful nano fish, the Celestial Pearl Danio dazzles with pearl-like spots, fiery orange fins and peaceful schooling behaviour, making it a true gem for planted aquariums.

    Quick Facts

    • Scientific name: Danio margaritatus
    • Common name: Celestial Pearl Danio (CPD), Galaxy Rasbora
    • Adult size: 2–2.5 cm
    • Tank size: 30L+ recommended
    • Difficulty: 🟢 Easy
    • Temperament: Peaceful
    • Best kept: Schools of 10 or more

    Is this for you?

    ✔️ Perfect if:

    • You love nano aquariums and aquascaping.
    • You want a peaceful schooling fish.
    • You keep planted aquariums with shrimp.
    • You enjoy observing natural behaviour and colour displays.

    ❌ Avoid if:

    • You keep large or aggressive fish.
    • You want a fish for a fast-flowing aquarium.
    • Your aquarium is newly established.
    • You plan on keeping fewer than six fish.

    Why choose the Celestial Pearl Danio?

    Discovered in Myanmar in 2006, the Celestial Pearl Danio quickly became one of the most sought-after nano fish in the aquarium hobby. Their midnight-blue body is covered with brilliant pearly white spots, while the fins glow with vibrant shades of orange and red, creating an appearance that resembles a star-filled night sky.

    Despite their small size, these fish have plenty of personality. Males display to one another by flaring their fins and intensifying their colours, while the school gently weaves through plants and hardscape in search of tiny foods.

    Their peaceful nature makes them an outstanding choice for planted aquariums, shrimp tanks and carefully selected nano community setups.

    Common mistakes

    • Keeping too few individuals.
    • Housing them with large or boisterous fish.
    • Providing very little plant cover.
    • Adding them to immature aquariums.
    • Offering food that's too large.

    Care made simple

    • Temperature: 20–26°C
    • pH: 6.5–7.5
    • Diet: Micro pellets, crushed flakes, baby brine shrimp, daphnia and other small frozen or live foods
    • Water: Clean, stable and well-filtered with gentle flow
    • Setup: Heavily planted aquarium with mosses, driftwood, leaf litter and open swimming areas

    Pairs perfectly with

    • Cherry Shrimp
    • Crystal Shrimp
    • Pygmy Corydoras
    • Otocinclus
    • Blue Eye Rainbowfish (Pseudomugil species)
    NTA Insight:
    Celestial Pearl Danios are one of those fish that reward patience. Fresh arrivals can appear shy and washed out, but once settled into a mature planted aquarium with quality food, males develop breathtaking colours. We recommend keeping at least 10–12 together—their confidence, schooling behaviour and natural displays improve dramatically in larger groups.

    FAQ

    How many Celestial Pearl Danios should I keep?

    They are happiest in schools of at least 10 fish. Larger groups display more natural behaviour, richer colours and reduced shyness.

    Are Celestial Pearl Danios peaceful?

    Yes. They are one of the most peaceful nano fish available and are ideal for planted community aquariums with other small, non-aggressive species.

    Can they live with shrimp?

    Absolutely. They mix very well with adult Neocaridina and Caridina shrimp. Newly hatched shrimplets may occasionally be eaten, but a well-planted aquarium with mosses provides excellent protection.

    Can Celestial Pearl Danios breed in home aquariums?

    Yes. They are relatively easy to breed in mature planted aquariums. They scatter small adhesive eggs among mosses and fine-leaved plants, although a dedicated breeding setup will greatly improve fry survival.

    Why are they sometimes called Galaxy Rasboras?

    When first introduced to the hobby, they were sold as the Galaxy Rasbora because of their star-like spotted pattern. They were later scientifically classified as Danio margaritatus, but both common names are still widely used today.

    Live Arrival & Ordering FAQ

    Why do livestock prices sometimes change?

    Unlike manufactured products, fish and shrimp continue to grow and develop over time. Their value changes as they increase in size, develop colour, or become breeding pairs.

    Our prices are based on the current size, quality and availability of each specimen. While pricing often remains stable for around 3–4 months, it may be updated at any time to reflect these changes.

    We always aim to offer healthy, high-quality livestock at fair and competitive prices.

    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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