Corydoras Armatus

Description

Armatus Cory (Corydoras armatus)

A rare and highly distinctive Corydoras with an elongated body, striking dorsal fin and active personality. Corydoras armatus is a true collector's species that thrives in spacious, well-maintained community aquariums.

Quick Facts

  • Scientific name: Corydoras armatus
  • Common name: Armatus Cory
  • Adult size: Approximately 5 cm
  • Tank size: 70L+ recommended (larger is preferred)
  • Difficulty: 🟑 Intermediate
  • Temperament: Extremely peaceful
  • Best kept: Groups of 6 or more

Is this for you?

βœ”οΈ Perfect if:

  • You enjoy collecting uncommon Corydoras species.
  • You keep a mature South American aquarium.
  • You appreciate active bottom-dwelling fish.
  • You want a peaceful species for a planted community tank.

❌ Avoid if:

  • You keep aggressive or predatory fish.
  • Your aquarium has sharp gravel.
  • You only intend to keep one Corydoras.
  • Your aquarium is newly established.

Why choose the Armatus Cory?

Corydoras armatus is a relatively uncommon species that stands out thanks to its streamlined body shape, extended dorsal fin and attractive natural markings. Although not as widely available as Bronze or Panda Corys, it shares the same peaceful temperament and fascinating social behaviour that make Corydoras so popular among aquarists.

Armatus Corys spend their day sifting through fine sand using their sensitive barbels, searching for worms, insect larvae and leftover food. When kept in proper groups, they regularly forage together and become noticeably more confident and active.

Because this species appreciates clean, oxygen-rich water and stable conditions, it performs best in mature aquariums with excellent filtration and regular maintenance. :contentReference[oaicite:0]{index=0}

Benefits

  • Rare collector's Corydoras
  • Elegant elongated body shape
  • Peaceful community fish
  • Excellent for planted aquariums
  • Active daytime bottom forager
  • Suitable with many peaceful South American species

Care made simple

  • Temperature: 22–27Β°C
  • pH: 6.0–7.5
  • Diet: Premium sinking pellets, Corydoras wafers, frozen bloodworms, blackworms, brine shrimp and live foods
  • Water: Clean, mature, highly oxygenated and well-filtered
  • Setup: Fine sand substrate, driftwood, leaf litter, live plants and open foraging areas
  • Always avoid sharp gravel to protect their sensitive barbels.

Pairs perfectly with

  • Apistogramma
  • Harlequin Rasboras
  • Cardinal Tetras
  • Peaceful Rainbowfish
  • Bristlenose Plecos
NTA Insight:
Armatus Corys are one of those species that reward patience. They can be a little shy after arriving, but once settled into a mature aquarium and surrounded by other Corydoras, they become surprisingly active. Like every Cory species we keep at Nano Tanks Australia, we strongly recommend purchasing a group rather than a single fish. Their confidence, natural behaviour and overall health are noticeably better in schools of six or more.

FAQ

How many Armatus Corys should I keep?

Keep at least six together. Larger groups of 8–10 or more display stronger schooling behaviour and are much more confident. :contentReference[oaicite:1]{index=1}

Do Armatus Corys eat algae?

No. They help consume uneaten food from the substrate but are not algae eaters. They require a varied diet of quality sinking foods and frozen treats.

Can they live with shrimp?

Yes. Adult Neocaridina and Caridina shrimp generally coexist well with Armatus Corys. Dense mosses and plants will provide excellent shelter for shrimplets.

Why is fine sand recommended?

Armatus Corys naturally sift through soft substrates using their barbels. Fine sand allows this behaviour while helping prevent wear and injury that can occur on coarse gravel. :contentReference[oaicite:2]{index=2}

Are Armatus Corys suitable for beginners?

Yes, provided the aquarium is mature and stable. Although they are rarer than many common Corydoras, their care requirements are very similar, with excellent water quality and a soft substrate being the keys to long-term success.

Corydoras Armatus

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    Description

    Armatus Cory (Corydoras armatus)

    A rare and highly distinctive Corydoras with an elongated body, striking dorsal fin and active personality. Corydoras armatus is a true collector's species that thrives in spacious, well-maintained community aquariums.

    Quick Facts

    • Scientific name: Corydoras armatus
    • Common name: Armatus Cory
    • Adult size: Approximately 5 cm
    • Tank size: 70L+ recommended (larger is preferred)
    • Difficulty: 🟑 Intermediate
    • Temperament: Extremely peaceful
    • Best kept: Groups of 6 or more

    Is this for you?

    βœ”οΈ Perfect if:

    • You enjoy collecting uncommon Corydoras species.
    • You keep a mature South American aquarium.
    • You appreciate active bottom-dwelling fish.
    • You want a peaceful species for a planted community tank.

    ❌ Avoid if:

    • You keep aggressive or predatory fish.
    • Your aquarium has sharp gravel.
    • You only intend to keep one Corydoras.
    • Your aquarium is newly established.

    Why choose the Armatus Cory?

    Corydoras armatus is a relatively uncommon species that stands out thanks to its streamlined body shape, extended dorsal fin and attractive natural markings. Although not as widely available as Bronze or Panda Corys, it shares the same peaceful temperament and fascinating social behaviour that make Corydoras so popular among aquarists.

    Armatus Corys spend their day sifting through fine sand using their sensitive barbels, searching for worms, insect larvae and leftover food. When kept in proper groups, they regularly forage together and become noticeably more confident and active.

    Because this species appreciates clean, oxygen-rich water and stable conditions, it performs best in mature aquariums with excellent filtration and regular maintenance. :contentReference[oaicite:0]{index=0}

    Benefits

    • Rare collector's Corydoras
    • Elegant elongated body shape
    • Peaceful community fish
    • Excellent for planted aquariums
    • Active daytime bottom forager
    • Suitable with many peaceful South American species

    Care made simple

    • Temperature: 22–27Β°C
    • pH: 6.0–7.5
    • Diet: Premium sinking pellets, Corydoras wafers, frozen bloodworms, blackworms, brine shrimp and live foods
    • Water: Clean, mature, highly oxygenated and well-filtered
    • Setup: Fine sand substrate, driftwood, leaf litter, live plants and open foraging areas
    • Always avoid sharp gravel to protect their sensitive barbels.

    Pairs perfectly with

    • Apistogramma
    • Harlequin Rasboras
    • Cardinal Tetras
    • Peaceful Rainbowfish
    • Bristlenose Plecos
    NTA Insight:
    Armatus Corys are one of those species that reward patience. They can be a little shy after arriving, but once settled into a mature aquarium and surrounded by other Corydoras, they become surprisingly active. Like every Cory species we keep at Nano Tanks Australia, we strongly recommend purchasing a group rather than a single fish. Their confidence, natural behaviour and overall health are noticeably better in schools of six or more.

    FAQ

    How many Armatus Corys should I keep?

    Keep at least six together. Larger groups of 8–10 or more display stronger schooling behaviour and are much more confident. :contentReference[oaicite:1]{index=1}

    Do Armatus Corys eat algae?

    No. They help consume uneaten food from the substrate but are not algae eaters. They require a varied diet of quality sinking foods and frozen treats.

    Can they live with shrimp?

    Yes. Adult Neocaridina and Caridina shrimp generally coexist well with Armatus Corys. Dense mosses and plants will provide excellent shelter for shrimplets.

    Why is fine sand recommended?

    Armatus Corys naturally sift through soft substrates using their barbels. Fine sand allows this behaviour while helping prevent wear and injury that can occur on coarse gravel. :contentReference[oaicite:2]{index=2}

    Are Armatus Corys suitable for beginners?

    Yes, provided the aquarium is mature and stable. Although they are rarer than many common Corydoras, their care requirements are very similar, with excellent water quality and a soft substrate being the keys to long-term success.

    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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