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[ARRIVED 13-JAN-2026] Corydoras Similis 3-4cm

Description

Corydoras similis (Smudge Spot Corydoras)

Subtle, elegant cory best suited to stable, established aquariums

Quick Facts

  • Size: ~5–6 cm
  • Tank size: 50L+ recommended
  • Difficulty: 🟡 Moderate
  • Temperament: Peaceful
  • Best kept: Groups (5+)
  • Plant safe: Yes

Is this for you?

✔️ Good if:

  • You want a more refined or less common Corydoras
  • You have an established, stable aquarium
  • You keep peaceful community fish
  • You are comfortable maintaining consistent water quality

❌ Avoid if:

  • Your tank is newly set up
  • You want a “set and forget” beginner fish
  • You plan to keep just one
  • You keep aggressive or fast-feeding fish

Why this fish?

Corydoras similis is appreciated for its clean body pattern and distinctive dark “smudge” marking near the dorsal area.

It offers the same peaceful and social behaviour as other corydoras, but is better suited to stable environments where water quality is consistent.

Common mistakes

  • Adding to immature tanks → higher stress and losses
  • Keeping them alone instead of in groups
  • Underfeeding due to “bottom feeder” assumptions
  • Keeping with aggressive or highly competitive fish
  • Inconsistent water quality or sudden changes

Care made simple

  • Temperature: 22–26°C
  • Diet: Sinking pellets, wafers, frozen foods
  • Group size: 5+ recommended
  • Substrate: Soft sand preferred
  • Water: Clean, stable, well-maintained

Pair with

  • Sinking cory pellets or wafers
  • Fine sand substrate
  • Driftwood and plants
  • Peaceful tetra, rasbora, or nano fish
NTA Insight:
This species does best when water conditions are stable and consistent. Most issues come from fluctuations or immature tanks rather than difficulty of care.

FAQ

Is Corydoras similis good for beginners?

It can be kept by beginners with an established tank, but it is less forgiving than common corydoras like paleatus or aeneus.

Can I keep just one?

No. Corydoras are social fish and should be kept in groups of at least 5.

Do they clean the tank?

No. They forage along the bottom but still require proper feeding.

Do they need sand?

Soft sand is preferred to protect their barbels, though smooth substrate can also work.

What do they eat?

Sinking pellets, wafers, and frozen foods such as bloodworms or brine shrimp.

[ARRIVED 13-JAN-2026] Corydoras Similis 3-4cm

Product form

Corydoras similis (Smudge Spot Corydoras) Subtle, elegant cory best suited to stable, established aquariums Quick Facts Size: ~5–6 cm Tank... Read more

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2 in stock

$20.00


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    Description

    Corydoras similis (Smudge Spot Corydoras)

    Subtle, elegant cory best suited to stable, established aquariums

    Quick Facts

    • Size: ~5–6 cm
    • Tank size: 50L+ recommended
    • Difficulty: 🟡 Moderate
    • Temperament: Peaceful
    • Best kept: Groups (5+)
    • Plant safe: Yes

    Is this for you?

    ✔️ Good if:

    • You want a more refined or less common Corydoras
    • You have an established, stable aquarium
    • You keep peaceful community fish
    • You are comfortable maintaining consistent water quality

    ❌ Avoid if:

    • Your tank is newly set up
    • You want a “set and forget” beginner fish
    • You plan to keep just one
    • You keep aggressive or fast-feeding fish

    Why this fish?

    Corydoras similis is appreciated for its clean body pattern and distinctive dark “smudge” marking near the dorsal area.

    It offers the same peaceful and social behaviour as other corydoras, but is better suited to stable environments where water quality is consistent.

    Common mistakes

    • Adding to immature tanks → higher stress and losses
    • Keeping them alone instead of in groups
    • Underfeeding due to “bottom feeder” assumptions
    • Keeping with aggressive or highly competitive fish
    • Inconsistent water quality or sudden changes

    Care made simple

    • Temperature: 22–26°C
    • Diet: Sinking pellets, wafers, frozen foods
    • Group size: 5+ recommended
    • Substrate: Soft sand preferred
    • Water: Clean, stable, well-maintained

    Pair with

    • Sinking cory pellets or wafers
    • Fine sand substrate
    • Driftwood and plants
    • Peaceful tetra, rasbora, or nano fish
    NTA Insight:
    This species does best when water conditions are stable and consistent. Most issues come from fluctuations or immature tanks rather than difficulty of care.

    FAQ

    Is Corydoras similis good for beginners?

    It can be kept by beginners with an established tank, but it is less forgiving than common corydoras like paleatus or aeneus.

    Can I keep just one?

    No. Corydoras are social fish and should be kept in groups of at least 5.

    Do they clean the tank?

    No. They forage along the bottom but still require proper feeding.

    Do they need sand?

    Soft sand is preferred to protect their barbels, though smooth substrate can also work.

    What do they eat?

    Sinking pellets, wafers, and frozen foods such as bloodworms or brine shrimp.

    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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