It is the only genus in the subfamily Leptobarbinae. Leptobarbus hoevenii or "sultan fish" migrate the fresh water rivers of Malaysia and travel at the surface in schools of 40-80 individuals at speeds of 0.48-1.08 km.
There is only one genus within the subfamily Leptobarbinae, which is Leptobarbus hoevenii, commonly known as the "sultan fish". This species migrates through Malaysia's freshwater rivers and swims at the surface in groups of 40-80 individuals at speeds of 0.48-1.08 km.