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Every fish passes through our dedicated quarantine system and strict biosecurity monitoring before sale - so it arrives healthy, settled and ready to thrive. How we quarantine →
The Borneo Loach (Gastromyzon punctulatus), also known as the Borneo Sucker Loach or Butterfly Hillstream Loach, is a fascinating freshwater fish renowned for its unique flattened body and ability to cling effortlessly to rocks and aquarium glass. Native to the fast-flowing, crystal-clear streams of Borneo, this species has evolved to thrive in highly oxygenated environments with strong water movement.
Their intricate spotted patterns and peaceful nature make them a favourite among aquascaping enthusiasts looking to recreate natural river habitats. Borneo Loaches spend much of their day grazing on algae, biofilm and microorganisms growing on rocks and décor, making them a valuable addition to mature aquariums. They are best kept in groups and coexist well with other peaceful river species such as danios, rasboras and small loaches.
A well-established aquarium with smooth rocks, driftwood, excellent filtration and strong water flow is essential for their long-term health. While they consume natural algae, they should also be offered algae wafers, Repashy gel foods and blanched vegetables to ensure a balanced diet.
The Borneo Loach is an excellent choice for aquarists wanting a unique, peaceful algae grazer that adds both character and natural beauty to a river-style freshwater aquarium.
Gastromyzon punctulatus
Borneo Loach
Borneo (Malaysia and Indonesia)
5–6 cm
Peaceful
Omnivore (primarily algae and biofilm grazer)
75 Litres
20–25°C
6.5–7.8
2–12 dGH
Intermediate
5–8 Years
River-style aquariums, mature planted aquariums and peaceful community tanks
Borneo Loaches are better suited to aquarists with some experience. They require excellent water quality, high oxygen levels and strong water movement to remain healthy.
Yes. They naturally graze on algae, biofilm and microorganisms throughout the day. However, they should also be supplemented with algae wafers, vegetable-based foods and quality sinking foods.
Absolutely. They are peaceful and do well with other calm species that enjoy similar water conditions, such as danios, rasboras and other hillstream fish.
Yes. They originate from mountain streams with strong currents and high oxygen levels. Good water movement and surface agitation are essential for their health.
Yes. They do well in small groups and often display interesting social interactions. Providing multiple grazing surfaces helps minimise minor territorial behaviour.
Yes, provided the aquarium has excellent water circulation, stable water quality and plenty of smooth rocks for grazing. Hardy plants that tolerate current are ideal.
Borneo Loaches require cooler, highly oxygenated water with good flow. Poor circulation can quickly lead to stress and health issues.
They rely on established biofilm and algae growth for grazing. Mature aquariums provide a much more suitable environment.
While they eat algae, natural growth alone is rarely enough. Offer algae wafers, gel foods and blanched vegetables regularly.
Smooth rocks and rounded substrates help protect their delicate undersides as they spend most of their time attached to surfaces.
This species is sensitive to ammonia, nitrite and elevated nitrate levels. Consistent maintenance is essential.
Large or aggressive tank mates can outcompete Borneo Loaches for food and create unnecessary stress.
This product is for in-store purchase only. Available for in-store pickup.
We stand behind everything we sell. If something is not right, get in touch and we will make it right. See our returns policy for the details.
This fish has been through our dedicated quarantine system and is feeding, settled and health-checked before sale. We still recommend acclimating slowly and quarantining new additions at home. Our team is happy to talk you through the right setup - just ask.