Hoven's carp (Leptobarbus hoevenii; Jelawat in Malay), also known as the mad barb or sultan fish, is a species of fish in the barb family. It is native to freshwater habitats in the Thai-Malay Peninsula, Borneo and Sumatra. Populations further north in the Chao Phraya and Mekong Basins were included in this species until 2009, but are now considered a separate species, L. rubripinna. The two are frequently confused and the same common names have been used for both; only L. rubripinna is known from the aquarium trade.