Balloon Red Eye Tetra (Moenkhausia sanctaefilomenae)

Description

Balloon Red Eye Tetra (Moenkhausia sanctaefilomenae)

Compact, colourful and full of character, the Balloon Red Eye Tetra is a selectively bred variety of the popular Red Eye Tetra. Featuring a rounded body, brilliant silver scales and its signature glowing red eye, this peaceful schooling fish adds movement and personality to community aquariums while maintaining a unique, eye-catching appearance.

Quick Facts

  • Scientific name: Moenkhausia sanctaefilomenae
  • Common name: Balloon Red Eye Tetra, Balloon Red Eye
  • Current size: Approximately 3–4 cm
  • Adult size: Approximately 5–6 cm
  • Tank size: 70L+ recommended
  • Difficulty: 🟢 Easy
  • Temperament: Peaceful and active
  • Minimum school: 6+ recommended (8–10+ preferred)

Is this for you?

āœ”ļø Perfect if:

  • You want an unusual schooling fish with plenty of personality.
  • You keep a peaceful planted community aquarium.
  • You enjoy active fish that constantly explore the mid-water.
  • You appreciate selectively bred varieties with distinctive body shapes.

āŒ Avoid if:

  • You plan to keep only one or two fish.
  • You house aggressive or fin-nipping species.
  • Your aquarium is still cycling.
  • You want a fish suited to very small nano aquariums.

Why choose Balloon Red Eye Tetras?

The Balloon Red Eye Tetra combines the attractive metallic silver body and vivid red eyes of the classic Red Eye Tetra with a shorter, deeper body profile. Their rounded appearance gives them a distinctive look while retaining the active schooling behaviour that makes the species so enjoyable to watch.

These peaceful fish are constantly on the move, swimming together through the middle levels of the aquarium and interacting with one another. Kept in larger schools, they become more confident and display more natural behaviours.

Their reflective scales sparkle beautifully under aquarium lighting, while the bright red ring around each eye provides a striking contrast against their silver body.

Benefits

  • Distinctive balloon body shape
  • Bright red eyes and shimmering silver body
  • Peaceful community fish
  • Active schooling behaviour
  • Hardy and beginner friendly
  • Excellent addition to planted aquariums

Care made simple

  • Temperature: 22–28°C
  • pH: 6.0–7.8
  • Diet: Quality flakes, micro pellets, frozen foods and live foods
  • Water: Clean, stable and well-filtered
  • Substrate: Sand or fine gravel
  • Setup: Planted aquarium with open swimming space and moderate water movement
  • Keep them in groups of at least six, with larger schools producing the best behaviour.
  • Provide a varied diet to support colour, health and longevity.

Pairs perfectly with

  • Corydoras
  • Pearl Gouramis
  • Bristlenose Catfish
  • Harlequin Rasboras
  • Bolivian Rams
NTA Insight:
The Balloon Red Eye Tetra is a selectively bred variety rather than a naturally occurring form. While its compact body shape gives it a unique appearance, it should still be provided with plenty of open swimming space and maintained in schools to encourage natural behaviour. At NTA, we recommend selecting active, healthy specimens and keeping them in mature community aquariums where they can truly shine.

FAQ

What makes the Balloon Red Eye different from the standard Red Eye Tetra?

The Balloon variety has a shorter, deeper body while retaining the silver colouration, red eyes and peaceful schooling behaviour of the standard Red Eye Tetra.

How many Balloon Red Eye Tetras should I keep?

They are schooling fish and should be kept in groups of at least six. Schools of eight or more display the most natural and confident behaviour.

Are they peaceful?

Yes. They are excellent community fish and coexist well with a wide variety of peaceful tropical species.

Can they live with shrimp?

Adult shrimp are generally safe, although tiny shrimplets may occasionally be eaten if the opportunity arises.

Do they eat plants?

No. They do not normally damage healthy aquarium plants and are well suited to planted aquariums.

Are they suitable for beginners?

Absolutely. Their hardy nature, peaceful temperament and simple care requirements make them an excellent choice for beginner aquarists.

How long do Balloon Red Eye Tetras live?

With excellent care and stable water quality, they typically live for 4–6 years.

Balloon Red Eye Tetra (Moenkhausia sanctaefilomenae)

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$8.00


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    Description

    Balloon Red Eye Tetra (Moenkhausia sanctaefilomenae)

    Compact, colourful and full of character, the Balloon Red Eye Tetra is a selectively bred variety of the popular Red Eye Tetra. Featuring a rounded body, brilliant silver scales and its signature glowing red eye, this peaceful schooling fish adds movement and personality to community aquariums while maintaining a unique, eye-catching appearance.

    Quick Facts

    • Scientific name: Moenkhausia sanctaefilomenae
    • Common name: Balloon Red Eye Tetra, Balloon Red Eye
    • Current size: Approximately 3–4 cm
    • Adult size: Approximately 5–6 cm
    • Tank size: 70L+ recommended
    • Difficulty: 🟢 Easy
    • Temperament: Peaceful and active
    • Minimum school: 6+ recommended (8–10+ preferred)

    Is this for you?

    āœ”ļø Perfect if:

    • You want an unusual schooling fish with plenty of personality.
    • You keep a peaceful planted community aquarium.
    • You enjoy active fish that constantly explore the mid-water.
    • You appreciate selectively bred varieties with distinctive body shapes.

    āŒ Avoid if:

    • You plan to keep only one or two fish.
    • You house aggressive or fin-nipping species.
    • Your aquarium is still cycling.
    • You want a fish suited to very small nano aquariums.

    Why choose Balloon Red Eye Tetras?

    The Balloon Red Eye Tetra combines the attractive metallic silver body and vivid red eyes of the classic Red Eye Tetra with a shorter, deeper body profile. Their rounded appearance gives them a distinctive look while retaining the active schooling behaviour that makes the species so enjoyable to watch.

    These peaceful fish are constantly on the move, swimming together through the middle levels of the aquarium and interacting with one another. Kept in larger schools, they become more confident and display more natural behaviours.

    Their reflective scales sparkle beautifully under aquarium lighting, while the bright red ring around each eye provides a striking contrast against their silver body.

    Benefits

    • Distinctive balloon body shape
    • Bright red eyes and shimmering silver body
    • Peaceful community fish
    • Active schooling behaviour
    • Hardy and beginner friendly
    • Excellent addition to planted aquariums

    Care made simple

    • Temperature: 22–28°C
    • pH: 6.0–7.8
    • Diet: Quality flakes, micro pellets, frozen foods and live foods
    • Water: Clean, stable and well-filtered
    • Substrate: Sand or fine gravel
    • Setup: Planted aquarium with open swimming space and moderate water movement
    • Keep them in groups of at least six, with larger schools producing the best behaviour.
    • Provide a varied diet to support colour, health and longevity.

    Pairs perfectly with

    • Corydoras
    • Pearl Gouramis
    • Bristlenose Catfish
    • Harlequin Rasboras
    • Bolivian Rams
    NTA Insight:
    The Balloon Red Eye Tetra is a selectively bred variety rather than a naturally occurring form. While its compact body shape gives it a unique appearance, it should still be provided with plenty of open swimming space and maintained in schools to encourage natural behaviour. At NTA, we recommend selecting active, healthy specimens and keeping them in mature community aquariums where they can truly shine.

    FAQ

    What makes the Balloon Red Eye different from the standard Red Eye Tetra?

    The Balloon variety has a shorter, deeper body while retaining the silver colouration, red eyes and peaceful schooling behaviour of the standard Red Eye Tetra.

    How many Balloon Red Eye Tetras should I keep?

    They are schooling fish and should be kept in groups of at least six. Schools of eight or more display the most natural and confident behaviour.

    Are they peaceful?

    Yes. They are excellent community fish and coexist well with a wide variety of peaceful tropical species.

    Can they live with shrimp?

    Adult shrimp are generally safe, although tiny shrimplets may occasionally be eaten if the opportunity arises.

    Do they eat plants?

    No. They do not normally damage healthy aquarium plants and are well suited to planted aquariums.

    Are they suitable for beginners?

    Absolutely. Their hardy nature, peaceful temperament and simple care requirements make them an excellent choice for beginner aquarists.

    How long do Balloon Red Eye Tetras live?

    With excellent care and stable water quality, they typically live for 4–6 years.

    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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