ahem...
it's a "mad barb" .. this is from wiki...
The Sultan fish (also called Mad
Barb), Leptobarbus hoevenii, is a fish species native to northern
Malaysia, Thailand, and Borneo. 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
i bet they felt sick after seeing the bill! 
Uncle you think only nausea? I think the guy that paid kena acid
reflex need to see doctors to reduce acids over production.
The rest of the guys laugh until see doctors for stomach
cramp!!!
