Potamosilurus is a genus of freshwater sea catfishes found on the island of New Guinea. There are currently four described species.
Species Potamosilurus coatesi (Kailola, 1990) (Coates' catfish) Potamosilurus macrorhynchus (Weber, 1913) (Sharp-nosed catfish) Potamosilurus taylori (Roberts, 1978) (Taylor's catfish) Potamosilurus velutinus (Weber, 1907) (Papillate catfish)
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