GastromyzontidaeFreshwater Fishintermediate

Chameleon Hillstream Loach Gastromyzon punctulatus

Gastromyzon punctulatus

Origin: Borneo

C

Water Parameters

Temperature2025 °C
15 °C35 °C
pH6.57.8
49
GH (Hardness)310 °dGH
0 °dGH30 °dGH
KH (Alkalinity)16 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
6 cm
Min Tank
100 L
Lifespan
5
Swimming Level
bottom
Schooling
No
Diet
herbivore
Temperament
Peaceful; males display toward each other.

About

Gastromyzon punctulatus is a Borneo hillstream loach with a bold black and white dotted pattern across its modified, wing-like pectoral fins. Like all Gastromyzon species it requires extremely high water flow and oxygenation, mimicking the Borneo highland stream biotope. It grazes on biofilm and algae across smooth rock surfaces. A group of 6+ in a dedicated hillstream biotope creates a fascinating natural display.

Care Guide

VERY HIGH flow required. pH 6.5–7.8. Oxygenated, clean water. 100+ L. Smooth rocks with biofilm. Cooler temperatures (20–25°C). Groups of 6+.

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