First record of the Fire-eyed loach Barbucca diabolica Roberts 1989 (Cypriniformes: Barbuccidae) for Belitung Island, Indonesia

The fire-eyed loach Barbucca diabolica, found in Southeast Asian freshwaters, is currently known from Thailand, West Malaysia, Sumatra, and Borneo. Despite this wide distribution, there are no published reports of this species for Belitung Island (Indonesia). We report the first occurrence of B. diabolica for Belitung Island, based on two specimens collected in the East Belitung Province. This new record extends the species distribution about 600 km southeast from Johor (Malay Peninsular, Malaysia), which is about 400 km east from Musi River (Sumatra, Indonesia), and about 500 km southwest from Kapuas River (Borneo, Indonesia). Here we also register the species for an additional island in Sundaland region.