本文係報告泰國及寮國境內的湄公河流域產之淡水鰕虎:吻鰕虎屬(Rhinogobius Gill,1859)魚類的分類研究,共計發現四種吻鰕虎魚類,包括有已知的湄公河吻鰕虎R. mekongianus (Pellegrin and Fang, 1940),以及本文將描述發表的三種新種:白斑吻鰕虎R. albimaculatus. n. sp.,線紋吻鰕虎R. lineatus. n. sp.,以反帶頰吻鰕虎R. taenigena. n. sp.。這四種吻鰕虎魚類,能以色斑特徵與計數形質予以區分。文中並提供該屬魚類的檢索表與各種之彩色照片,以供參考。
Four valid species of the genus Rhinogobius Gill, 1859 occur in the Mekong basin in Thailand and Laos: R. mekongianus (Pellegrin and Fang, 1940), and 3 new species, R. albimaculatus, R. lineatus, and R. taenigena. The 4 species can be distinguished by their color patterns and different meristic characters.