New records and updated list of species in Gobiidae in the Hoi estuary of Ma River, Thanh Hoa province, Vietnam

Fieldwork in the Hoi estuary area of the Ma River has recorded nine species of Gobiidae. Three of these species are recorded for the first time in the study area, including Acentrogobius caninus (Valenciennes, 1837), Glossogobius olivaceus (Temminck & Schlegel, 1845), and Oxyurichthys papuensis (Valenciennes, 1837). We update the list of gobiid species in the Hoi estuary; it now includes 18 species.