Borneo loach

The Borneo loach (Pangio shelfordii) is a Southeast Asian species of cobitid fish. It is a river fish found on the Malay Peninsula, Sumatra and Borneo Most commonly found in shallow, slow-moving sections of forest streams or other calm habitats such as swamps, oxbows, and backwaters.

Borneo loach
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cobitidae
Genus:	Pangio
Species:	P. shelfordii
Binomial name
Pangio shelfordii (Popta, 1903)
Synonyms
Acanthophthalmus shelfordii Popta, 1903

Many such environments are associated with ancient peat swamps and contain black water although it’s also found in clear waters which may or may not be tannin-stained to some extent.

Such habitats are typically shaded from the sun by marginal vegetation and the dense tree canopy above.