The ludong or lobed river mullet (Cestraeus plicatilis) is a freshwater mullet. While it is claimed to be endemic to Cagayan River and tributaries extending through the watersheds of Cagayan Valley and the Santa-Abra River Systems of Ilocos Sur and Abra in the Philippines, verifiable and reliable sources have listed Celebes, New Caledonia, New Hebrides, and Fiji as areas where the lobed river mullet may be found. According to the BFAR, this fish is habituating in the deep pools of Addalem River in Aglipay, Quirino, and rapids of Didimpit in Lacab, Jones, Isabela.