Hemimyzon

A rarely imported hillstream loach from the upper Chaopraya River in Thailand, H. nanensis is, like most of its close relatives, highly adapted for life in  the shallow, fast-moving mountain streams where they occur in the wild. In the aquarium, they require similar conditions, with cooler, well-oxygenated water, strong current, and lots of smooth rocks and driftwood for cover. They are specialized algae and biofilm grazers in the wild and require a varied diet of algae or vegetable based foods like Repashy gel diet.