Sawi

Gastromyzon viriosus is a hillstream loach known only from the Tatau River drainage in central Sarawak, Malaysian Borneo. A dark brown body with 8-10 complete vertical cream bars and a thin, cream, reticulated pattern on the head identify it. It is occasionally seen in the trade, most often in mixed shipments labelled 'Borneo sucker', 'Hong Kong pleco' or 'butterfly loach' regardless of species.