Little is known about the diversity and status of endemic freshwater fishes which are valuable bio-indicators of ecosystem health and an integral part of a country's natural heritage.

The authors would like to correct the error and add supporting paragraphs and table in the publication of the original article. The corrected detail is published with this erratum for your reading.The data collected were analyzed using standard taxonomic keys based on morphometric characteristics.

A species of goby, Lentipes armatus Sakai and Nakamura 1979, described as endemic to the Ryukyu Islands in Japan was recently discovered in the Amburayan River in Benguet, Luzon Island, Philippines. Lentipes armatus has been identified based on photographic and actual specimens from landed catch surveys in Atok, Kapangan, and Kibungan in the Province of Benguet. Morphological features, morphometric characters, and meristic counts of the collected specimens of the local population match those reported in the Ryukyu Islands in Japan. Moreover, genetic studies of the species confirmed its identification as L. armatus. Samples for the Deoxyribonucleic Acid (DNA) analysis and identification of this species were collected from the Amburayan River traversing the Municipalities of Atok, Kapangan, and Kibungan in the Province of Benguet. Therefore, the specimen described herein constitutes the first record of the species in the Cordillera. Furthermore, the occurrence of the L. armatus in the Amburayan River in the Cordillera, northern part of the Philippines, suggests its possible range expansion. The first record of the L. armatus in the Philippines was reported from the Taguibao River upstream of Sitio Bongodman (proper), in the east end of Ancicala, Province of Agusan del Norte, Mindanao Island. With this, it may also propose that the L. armatus is an indigenous fish species in the country, particularly thriving in the Amburayan River, Benguet and Taguibao River, Agusan del Norte, Philippines.

The composition, diversity, and distribution of fish species in the Ibulao River were surveyed from January to December 2015-2019. The samples for fish species identification were collected from the landed catch of three landing centers in the Ibulao River, namely: Lamut, Kiangan, and Lagawe in the Province of Ifugao, Philippines. The sampling of stocks was conducted using the National Stock Assessment Program (NSAP) methodology. A total of 18 fish species from 11 families were recorded. The river supports four endemic species, two native species, 11 introduced species, and one species for further identification. The status of one goby species will be determined upon identification at the species level. In 2015 and 2016, the most dominant catch in the Ibulao River was Cyprinus carpio (common carp), but from 2017 to 2019, the most dominant catch was Oreochromis niloticus (Nile tilapia). These two introduced fish species constituted the top 2 fish species in the Ibulao River from 2015 to 2019. The native fish species, which are the migratory fish Anguilla marmorata (giant mottled eel) and the Awaous melanocephalus (largesnout goby), are found in all the landing centers but with an observed declining catch. This information will serve as a basis for formulating protection and conservation policies for the fish species and their habitat in the Ibulao River.