Borneo Sucker / Hillstream Loach (Gastromyzon spp.) 2-5cm

Description

Borneo Sucker / Hillstream Loach (Gastromyzon spp.)

Unique, peaceful and unlike any other bottom dweller, the Borneo Sucker is a fascinating hillstream fish specially adapted to life in fast-flowing mountain streams. With its flattened body, suction-cup fins and constant grazing behaviour, this remarkable loach is a favourite among aquarists looking for something truly different.

Quick Facts

  • Scientific name: Gastromyzon spp.
  • Common name: Borneo Sucker, Hillstream Loach, Borneo Hillstream Loach
  • Current size: Approximately 3–5 cm
  • Adult size: Approximately 5–7 cm
  • Tank size: 60L+ recommended
  • Difficulty: 🟡 Moderate
  • Temperament: Peaceful bottom-dweller
  • Social needs: Best kept in small groups of 3 or more

Is this for you?

✔️ Perfect if:

  • You enjoy unusual and highly specialised fish.
  • You have a mature aquarium with excellent water quality.
  • You can provide high oxygen levels and moderate to strong water movement.
  • You love watching natural grazing behaviour.

❌ Avoid if:

  • Your aquarium has poor circulation or warm, stagnant water.
  • You expect them to survive on algae alone.
  • You keep aggressive bottom-dwelling fish.
  • Your aquarium is newly established with little natural biofilm.

Why choose Borneo Suckers?

Borneo Suckers are among the most unusual freshwater fish available. Their flattened bodies and specially adapted fins allow them to cling tightly to rocks and glass, even in strong currents, giving them an appearance often compared to miniature freshwater stingrays.

Native to fast-flowing mountain streams throughout Borneo, these loaches spend their days grazing on biofilm, microorganisms and tiny aquatic invertebrates. Their constant movement and fascinating behaviour make them one of the most entertaining fish in a well-established aquarium.

Although often purchased as algae eaters, Borneo Suckers require a varied diet to remain healthy. They thrive in mature aquariums where natural grazing opportunities are supplemented with quality prepared foods and frozen foods.

Benefits

  • Unique suction-cup body shape
  • Excellent addition to peaceful planted aquariums
  • Constant grazing and fascinating behaviour
  • Safe with plants
  • Peaceful with other community fish
  • Ideal for river-style aquarium setups

Care made simple

  • Temperature: 20–25°C
  • pH: 6.5–7.8
  • Diet: Algae wafers, spirulina foods, biofilm, Repashy-style gel foods, frozen bloodworms, daphnia and other small invertebrates
  • Water: Clean, highly oxygenated and stable
  • Flow: Moderate to strong water movement is highly beneficial
  • Substrate: Smooth rocks, rounded gravel and driftwood with plenty of grazing surfaces
  • Allow natural algae and biofilm to develop on rocks rather than keeping every surface spotless.
  • Supplement their diet regularly—they cannot thrive on algae growth alone.

Pairs perfectly with

  • White Cloud Mountain Minnows
  • Celestial Pearl Danios
  • Green Neon Tetras
  • Pygmy Corydoras
  • Amano Shrimp
NTA Insight:
One of the biggest misconceptions about Hillstream Loaches is that they are simply "algae eaters." While they constantly graze, they actually consume a mixture of biofilm, microorganisms and tiny invertebrates. Mature aquariums with excellent oxygenation, established rock surfaces and a varied supplemental diet produce the healthiest, longest-lived fish. If you can recreate a flowing stream environment, few species display more fascinating natural behaviour.

FAQ

Are Borneo Suckers good algae eaters?

They continuously graze on algae, biofilm and microorganisms, but they should never be expected to survive on algae alone. A varied diet is essential for long-term health.

Do they need strong water flow?

Yes. In nature they inhabit fast-flowing mountain streams with very high oxygen levels. Moderate to strong water movement helps them thrive in the aquarium.

Can they live in planted aquariums?

Absolutely. They are completely plant-safe and pair beautifully with mature planted aquariums that offer rocks, driftwood and plenty of biofilm.

Are Hillstream Loaches aggressive?

No. They are peaceful fish, although minor territorial displays between members of the same species can occur without causing harm.

Can they be kept with shrimp?

Yes. They are excellent companions for adult freshwater shrimp and generally ignore them completely.

Do they stick to the glass?

Yes. Their modified fins create a powerful suction effect that allows them to cling to glass, rocks and driftwood while grazing.

Are they suitable for beginners?

They are best suited to aquarists with established aquariums who can provide clean, oxygen-rich water and understand their specialised dietary needs.

How long do Borneo Suckers live?

With excellent water quality and proper nutrition, they commonly live for 5–8 years.

Borneo Sucker / Hillstream Loach (Gastromyzon spp.) 2-5cm

Product form

SKU: C17M

Out of stock,  

$60.00


All prices include GST
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    Description

    Borneo Sucker / Hillstream Loach (Gastromyzon spp.)

    Unique, peaceful and unlike any other bottom dweller, the Borneo Sucker is a fascinating hillstream fish specially adapted to life in fast-flowing mountain streams. With its flattened body, suction-cup fins and constant grazing behaviour, this remarkable loach is a favourite among aquarists looking for something truly different.

    Quick Facts

    • Scientific name: Gastromyzon spp.
    • Common name: Borneo Sucker, Hillstream Loach, Borneo Hillstream Loach
    • Current size: Approximately 3–5 cm
    • Adult size: Approximately 5–7 cm
    • Tank size: 60L+ recommended
    • Difficulty: 🟡 Moderate
    • Temperament: Peaceful bottom-dweller
    • Social needs: Best kept in small groups of 3 or more

    Is this for you?

    ✔️ Perfect if:

    • You enjoy unusual and highly specialised fish.
    • You have a mature aquarium with excellent water quality.
    • You can provide high oxygen levels and moderate to strong water movement.
    • You love watching natural grazing behaviour.

    ❌ Avoid if:

    • Your aquarium has poor circulation or warm, stagnant water.
    • You expect them to survive on algae alone.
    • You keep aggressive bottom-dwelling fish.
    • Your aquarium is newly established with little natural biofilm.

    Why choose Borneo Suckers?

    Borneo Suckers are among the most unusual freshwater fish available. Their flattened bodies and specially adapted fins allow them to cling tightly to rocks and glass, even in strong currents, giving them an appearance often compared to miniature freshwater stingrays.

    Native to fast-flowing mountain streams throughout Borneo, these loaches spend their days grazing on biofilm, microorganisms and tiny aquatic invertebrates. Their constant movement and fascinating behaviour make them one of the most entertaining fish in a well-established aquarium.

    Although often purchased as algae eaters, Borneo Suckers require a varied diet to remain healthy. They thrive in mature aquariums where natural grazing opportunities are supplemented with quality prepared foods and frozen foods.

    Benefits

    • Unique suction-cup body shape
    • Excellent addition to peaceful planted aquariums
    • Constant grazing and fascinating behaviour
    • Safe with plants
    • Peaceful with other community fish
    • Ideal for river-style aquarium setups

    Care made simple

    • Temperature: 20–25°C
    • pH: 6.5–7.8
    • Diet: Algae wafers, spirulina foods, biofilm, Repashy-style gel foods, frozen bloodworms, daphnia and other small invertebrates
    • Water: Clean, highly oxygenated and stable
    • Flow: Moderate to strong water movement is highly beneficial
    • Substrate: Smooth rocks, rounded gravel and driftwood with plenty of grazing surfaces
    • Allow natural algae and biofilm to develop on rocks rather than keeping every surface spotless.
    • Supplement their diet regularly—they cannot thrive on algae growth alone.

    Pairs perfectly with

    • White Cloud Mountain Minnows
    • Celestial Pearl Danios
    • Green Neon Tetras
    • Pygmy Corydoras
    • Amano Shrimp
    NTA Insight:
    One of the biggest misconceptions about Hillstream Loaches is that they are simply "algae eaters." While they constantly graze, they actually consume a mixture of biofilm, microorganisms and tiny invertebrates. Mature aquariums with excellent oxygenation, established rock surfaces and a varied supplemental diet produce the healthiest, longest-lived fish. If you can recreate a flowing stream environment, few species display more fascinating natural behaviour.

    FAQ

    Are Borneo Suckers good algae eaters?

    They continuously graze on algae, biofilm and microorganisms, but they should never be expected to survive on algae alone. A varied diet is essential for long-term health.

    Do they need strong water flow?

    Yes. In nature they inhabit fast-flowing mountain streams with very high oxygen levels. Moderate to strong water movement helps them thrive in the aquarium.

    Can they live in planted aquariums?

    Absolutely. They are completely plant-safe and pair beautifully with mature planted aquariums that offer rocks, driftwood and plenty of biofilm.

    Are Hillstream Loaches aggressive?

    No. They are peaceful fish, although minor territorial displays between members of the same species can occur without causing harm.

    Can they be kept with shrimp?

    Yes. They are excellent companions for adult freshwater shrimp and generally ignore them completely.

    Do they stick to the glass?

    Yes. Their modified fins create a powerful suction effect that allows them to cling to glass, rocks and driftwood while grazing.

    Are they suitable for beginners?

    They are best suited to aquarists with established aquariums who can provide clean, oxygen-rich water and understand their specialised dietary needs.

    How long do Borneo Suckers live?

    With excellent water quality and proper nutrition, they commonly live for 5–8 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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