The Sultan fish Leptobarbus hoevenii, is a fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 species native to northern Malaysia, Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

, and Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

. It is a primarily freshwater fish. It may reach up to about 60 centimetres (24 in) long. This fish is omnivorous and is a midwater to near bottom dweller. This fish lives in groups.

The Sultan fish is a common feature on the menu of many local Chinese restaurants as it makes for good eating. This fish is prized highly in Cambodia and Vietnam. However, eating its flesh may cause nausea.