Taxonomical notes on selected freshwater fish species described from northern and central Vietnam (Cypriniformes：Balitoridae, Cobitidae, Cyprinidae, Nemacheilidae; Perciformes：Channidae, Osphronemidae; Synbranchiformes：Mastacembelidae)

Selected, little known taxa of northern and central Vietnamese freshwater fish species are reviewed. Nomenclatural acts are taken: Hemibarbus lehoai is placed in synonymy of H. maculatus, Paracobitis hagiangensis in synonymy of Schistura caudofurca. A neotype of Micronemacheilus bacmeensis is assigned. The name Channa hanamensis is treated as a nomen nudum. Two labeonine species described from China are nomenclaturally affected: Garra findolabium is transferred to Vinagarra and its specific epithet is treated as a noun in apposition; the specific epithet of Sinigarra napoense is corrected to napoensis.