Almost nothing is known about the natural history of the Borneo shark. It is viviparous like other requiem sharks; the females bear litters of six pups, which are provisioned through gestation by a placental connection. The International Union for Conservation of Nature last assessed this species as Endangered, at which time it had not been seen since 1937. While an extant population has since been found, the Borneo shark continues to merit conservation concern given its highly limited range within heavily fished waters.