Pseudomugil signifer Pacific Blue Eye 2-4cm

Description

Pacific Blue Eye

A peaceful Australian native rainbowfish with brilliant electric blue eyes, shimmering silver body, and active schooling behaviour that's perfect for planted aquariums.

Quick Facts

  • Scientific name: Pseudomugil signifer
  • Adult size: 3–4 cm
  • Tank size: 40L+ recommended
  • Difficulty: 🟢 Easy
  • Temperament: Peaceful
  • Best kept: Schools of 6 or more

Is this for you?

✔️ Perfect if:

  • You want an active schooling fish.
  • You enjoy Australian native species.
  • You keep planted community aquariums.
  • You want a peaceful fish with brilliant colour.

❌ Avoid if:

  • You keep large predatory fish.
  • Your aquarium has aggressive tank mates.
  • You want a fish that thrives alone.
  • Your aquarium has poor water quality.

Why choose Pacific Blue Eyes?

Pacific Blue Eyes are one of Australia's most iconic native aquarium fish. Their shimmering silver bodies are beautifully complemented by their striking electric blue eyes, giving them a unique appearance that catches the light from every angle.

Constantly active, they spend much of their day swimming through the middle and upper levels of the aquarium. Males frequently display to one another by extending their fins, creating an impressive natural display without serious aggression.

Their peaceful nature and hardiness make them an excellent choice for beginners while still being appreciated by experienced aquarists looking to showcase Australian native species.

Common mistakes

  • Keeping too few individuals.
  • Housing them with aggressive fish.
  • Using an uncovered aquarium—they are capable jumpers.
  • Maintaining poor water quality.
  • Keeping them without open swimming space.

Care made simple

  • Temperature: 20–28°C
  • pH: 6.5–8.0
  • Diet: Quality nano pellets, flakes, frozen foods and live foods
  • Water: Clean, well-filtered with gentle to moderate flow
  • Setup: Planted aquarium with open swimming areas and a secure lid

Pairs perfectly with

  • Blue Eyes
  • Rainbowfish
  • Corydoras
  • Peaceful shrimp (larger adults)
  • Live plants and driftwood
NTA Insight:
Pacific Blue Eyes are often overlooked because of their small size, but once kept in a proper school they become one of the most entertaining fish in the aquarium. The males constantly display to each other, flashing their electric blue eyes and delicate fins while remaining remarkably peaceful.

FAQ

How many Pacific Blue Eyes should I keep?

They are schooling fish and should be kept in groups of at least six, although larger groups display more natural behaviour and are even more impressive.

Can they live with shrimp?

Generally yes. Adult shrimp are usually left alone, although very small shrimplets may occasionally be eaten.

Are they suitable for beginners?

Absolutely. Pacific Blue Eyes are hardy, peaceful and adaptable, making them an excellent Australian native species for both beginner and experienced fishkeepers.

Do they breed in aquariums?

Yes. Given healthy conditions and fine-leaved plants or spawning mops, they will regularly scatter eggs and can breed readily in home aquariums.

Why are they called Pacific Blue Eyes?

Their vivid iridescent blue eyes are their most distinctive feature and remain visible even from across the aquarium, giving this beautiful Australian native its common name.

Pseudomugil signifer Pacific Blue Eye 2-4cm

Product form
📦 Arrival Date: 18 February 2026

Out of stock,  

$12.00


All prices include GST
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    Description

    Pacific Blue Eye

    A peaceful Australian native rainbowfish with brilliant electric blue eyes, shimmering silver body, and active schooling behaviour that's perfect for planted aquariums.

    Quick Facts

    • Scientific name: Pseudomugil signifer
    • Adult size: 3–4 cm
    • Tank size: 40L+ recommended
    • Difficulty: 🟢 Easy
    • Temperament: Peaceful
    • Best kept: Schools of 6 or more

    Is this for you?

    ✔️ Perfect if:

    • You want an active schooling fish.
    • You enjoy Australian native species.
    • You keep planted community aquariums.
    • You want a peaceful fish with brilliant colour.

    ❌ Avoid if:

    • You keep large predatory fish.
    • Your aquarium has aggressive tank mates.
    • You want a fish that thrives alone.
    • Your aquarium has poor water quality.

    Why choose Pacific Blue Eyes?

    Pacific Blue Eyes are one of Australia's most iconic native aquarium fish. Their shimmering silver bodies are beautifully complemented by their striking electric blue eyes, giving them a unique appearance that catches the light from every angle.

    Constantly active, they spend much of their day swimming through the middle and upper levels of the aquarium. Males frequently display to one another by extending their fins, creating an impressive natural display without serious aggression.

    Their peaceful nature and hardiness make them an excellent choice for beginners while still being appreciated by experienced aquarists looking to showcase Australian native species.

    Common mistakes

    • Keeping too few individuals.
    • Housing them with aggressive fish.
    • Using an uncovered aquarium—they are capable jumpers.
    • Maintaining poor water quality.
    • Keeping them without open swimming space.

    Care made simple

    • Temperature: 20–28°C
    • pH: 6.5–8.0
    • Diet: Quality nano pellets, flakes, frozen foods and live foods
    • Water: Clean, well-filtered with gentle to moderate flow
    • Setup: Planted aquarium with open swimming areas and a secure lid

    Pairs perfectly with

    • Blue Eyes
    • Rainbowfish
    • Corydoras
    • Peaceful shrimp (larger adults)
    • Live plants and driftwood
    NTA Insight:
    Pacific Blue Eyes are often overlooked because of their small size, but once kept in a proper school they become one of the most entertaining fish in the aquarium. The males constantly display to each other, flashing their electric blue eyes and delicate fins while remaining remarkably peaceful.

    FAQ

    How many Pacific Blue Eyes should I keep?

    They are schooling fish and should be kept in groups of at least six, although larger groups display more natural behaviour and are even more impressive.

    Can they live with shrimp?

    Generally yes. Adult shrimp are usually left alone, although very small shrimplets may occasionally be eaten.

    Are they suitable for beginners?

    Absolutely. Pacific Blue Eyes are hardy, peaceful and adaptable, making them an excellent Australian native species for both beginner and experienced fishkeepers.

    Do they breed in aquariums?

    Yes. Given healthy conditions and fine-leaved plants or spawning mops, they will regularly scatter eggs and can breed readily in home aquariums.

    Why are they called Pacific Blue Eyes?

    Their vivid iridescent blue eyes are their most distinctive feature and remain visible even from across the aquarium, giving this beautiful Australian native its common name.

    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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