Laubuka lankensis also known as Blue laubuca, is a cyprinid fish species in the family Cyprinidae, which is endemic to island Sri Lanka. The species is known as Kara Adaya, Tatu Dandiya, Nil Kara-Adaya in Sinhala language. It is a freshwater species, that is confined to lowlands of Mahaweli River and other parts of the northern dry zone of Sri Lanka.