Spotted Hillstream Loach

Gastromyzon punctulatus

Species Highlight

• Size: 5–6 cm
• Temperament: Peaceful bottom-dweller
• Origin: Borneo (Malaysia & Indonesia)

• Appearance: Flattened body with distinctive spotted pattern and wide pectoral fins

• Tank Role: Rock grazer and biofilm feeder

• Special Feature: Specialized body shape allows it to cling to rocks in fast-flowing streams

Fun Facts

• Hillstream loaches are sometimes nicknamed “butterfly loaches” because their fins spread like wings as they glide over rocks.
• They are perfectly adapted to fast-moving mountain streams with high oxygen levels.
• These fish constantly graze on biofilm, algae, and microorganisms on rocks and surfaces.

Care Recommendations

• Tank size: 20 gallons+
• Diet: Biofilm, algae, sinking wafers, frozen foods
• Aquascape: Smooth rocks, driftwood, and areas with moderate to strong current
• Tankmates: Peaceful fish that enjoy cooler, well-oxygenated water
• Water parameters: Clean, highly oxygenated water with stable conditions