Wallago attu is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. According to Malaysian folklore, the descendant of a person called Tok Kaduk cannot eat and touch the fish because the legend says that a long time ago, Tok Kaduk caught this tapah. When he cut open its stomach, there was gold inside the fish so Tok Kaduk took the gold, stitched up the fish, and released it back into the river. From that time, if the descendant came in touch with the fish, their skin would become red and itchy until they went to Kg Tua, Lambor Kanan near Bota to find the medicine. The medicine is the remaining gold from the fish, which has been kept to make the cure for the disease.