FAMILY Gastromyzontidae Fowler, 1950 - hillstream loaches GENUS Annamia Hora, 1932 - hillstream loaches Species Annamia normani (Hora, 1931) - Annam hillstream loach Species Annamia thuathienensis Nguyen, in Nguyen, 2005 - Thua Thien hillstream loach GENUS Beaufortia Hora, 1932 - hillstream loaches Species Beaufortia cyclica Chen, 1980 - Longzhow hillstream loach [=polliciformis] Species Beaufortia huangguoshuensis Zheng & Zhang, 1987 - Huangguoshu hillstream loach Species Beaufortia intermedia Tang & Wang, 1997 - Sandu hillstream loach Species Beaufortia kweichowensis (Fang, 1931) - Kweichow hillstream loach [=gracilicauda] Species Beaufortia leveretti (Nichols & Pope, 1927) - Nodoa hillstream loach Species Beaufortia liui Chang, 1944 - Loshan hillstream loach Species Beaufortia niulanensis Chen et al., 2009 - Niulan hillstream loach Species Beaufortia pingi (Fang, 1930) - Ping hillstream loach Species Beaufortia polylepis Chen, in Zheng et al., 1982 - Yiliang hillstream loach Species Beaufortia szechuanensis (Fang, 1930) - Omei-shien hillstream loach Species Beaufortia yunnanensis (Li et al., in Li et al., 1998) - Yunnan beaufortia loach Species Beaufortia zebroida (Fang, 1930) - zebroidus hillstream loach [=fasciolata, multiocellata] GENUS Erromyzon Kottelat, 2004 - hillstream loaches Species Erromyzon compactus Kottelat, 2004 - Ba Che hillstream loach Species Erromyzon damingshanensis Xiu & Yang, 2017 - Naxue hillstream loach Species Erromyzon kalotaenia Yang et al., 2012 - Changle hillstream loach Species Erromyzon sinensis (Chen, 1980) - Lonsheng hillstream loach Species Erromyzon yangi Neely et al., 2007 - Yang's hillstream loach GENUS Formosania Ōshima, 1919 - hillstream loaches [=Crossostoma] Species Formosania chenyiyui (Zheng, 1991) - Chenyiyui hillstream loach Species Formosania davidi (Sauvage, 1878) - David's hillstream loach Species Formosania fascicauda (Nichols, 1926) - Fuching hillstream loach [=foochowensis] Species Formosania fasciolata (Wang et al., 2006) - Rivulet hillstream loach Species Formosania galericula (Zhang, in Zhang & Wang, 2011) - galericula hillstream loach Species Formosania lacustris (Steindachner, 1908) - lacustre hillstream loach [=formosanum, gilberti, tengi] Species Formosania paucisquama (Zheng, 1981) - paucisquama hillstream loach Species Formosania stigmata (Nichols, 1926) - stigmata hillstream loach Species Formosania tinkhami (Herre, 1934) - Tinkham's hillstream loach GENUS Gastromyzon Günther, 1874 - hillstream loaches [=Lepidoglanis] Species Gastromyzon aequabilis Tan, 2006 - Kuamut hillstream loach Species Gastromyzon aeroides Tan & Sulaiman, 2006 - Sungai hillstream loach Species Gastromyzon auronigrus Tan, 2006 - Kampong hillstream loach Species Gastromyzon bario Tan, 2006 - Bario hillstream loach Species Gastromyzon borneensis Günther, 1874 - Sabah hillstream loach Species Gastromyzon contractus Roberts, 1982 - Tebelian hillstream loach Species Gastromyzon cornusaccus Tan, 2006 - Kota Marudu hillstream loach Species Gastromyzon cranbrooki Tan & Sulaiman, 2006 - Temburong hillstream loach Species Gastromyzon crenastus Tan & Leh, 2006 - Serian hillstream loach Species Gastromyzon ctenocephalus Roberts, 1982 - Senah hillstream loach Species Gastromyzon danumensis Chin & Inger, 1989 - Sungei Palum hillstream loach Species Gastromyzon embalohensis Rachmatika, 1998 - Embaloh hillstream loach Species Gastromyzon extrorsus Tan, 2006 - Petagas hillstream loach Species Gastromyzon farragus Tan & Leh, 2006 - farragus hillstream loach Species Gastromyzon fasciatus Inger & Chin, 1961 - Sungei Putai hillstream loach Species Gastromyzon ingeri Tan, 2006 - Inger hillstream loach Species Gastromyzon introrsus Tan, 2006 - Crocker hillstream loach Species Gastromyzon katibasensis Leh & Chai, 2003 - Menyarin hillstream loach Species Gastromyzon lepidogaster Roberts, 1982 - Mengalong hillstream loach Species Gastromyzon megalepis Roberts, 1982 - Baleh hillstream loach Species Gastromyzon monticola (Vaillant, 1889) - Kina-Balou hillstream loach Species Gastromyzon ocellatus Tan & Ng, 2004 - Bau hillstream loach Species Gastromyzon ornaticauda Tan & Martin-Smith, 1998 - Kuamut hillstream loach Species Gastromyzon pariclavis Tan & Martin-Smith, 1998 - pariclavis hillstream loach Species Gastromyzon praestans Tan, 2006 - praestans hillstream loach Species Gastromyzon psiloetron Tan, 2006 - Lalut hillstream loach Species Gastromyzon punctulatus Inger & Chin, 1961 - hillstream loach Species Gastromyzon ridens Roberts, 1982 - ridens hillstream loach Species Gastromyzon russulus Tan, 2006 - Enggeng hillstream loach Species Gastromyzon scitulus 2006 - Serian hillstream loach Species Gastromyzon spectabilis Tan, 2006 - Taman hillstream loach Species Gastromyzon stellatus Tan, 2006 - stellatus hillstream loach Species Gastromyzon umbrus Tan, 2006 - umbrus hillstream loach Species Gastromyzon venustus Tan & Sulaiman, 2006 - venustus hillstream loach Species Gastromyzon viriosus Tan, 2006 - viriosus hillstream loach Species Gastromyzon zebrinus Tan, 2006 - zebrinus hillstream loach GENUS Glaniopsis Boulenger, 1899 - hillstream loaches Species Glaniopsis denudata Roberts, 1982 - denudata hillstream loach Species Glaniopsis gossei Roberts, 1982 - Arur Dalan hillstream loach Species Glaniopsis hanitschi Boulenger, 1899 - Hanitsch hillstream loach Species Glaniopsis multiradiata Roberts, 1982 - multiradiata hillstream loach GENUS Hypergastromyzon Roberts, 1989 - hillstream loaches Species Hypergastromyzon eubranchus Roberts, 1991 - Batang hillstream loach Species Hypergastromyzon humilis Roberts, 1989 - Tamang hillstream loach GENUS Katibasia Kottelat, 2004 - hillstream loaches Species Katibasia insidiosa Kottelat, 2004 - Sarawak hillstream loach GENUS Liniparhomaloptera Fang, 1935 - hillstream loaches Species Liniparhomaloptera disparis (Lin, 1934) - disparis hillstream loach Species Liniparhomaloptera macrostoma Wu et al., 2016 - Huoyan hillstream loach Species Liniparhomaloptera obtusirostris Zheng & Chen, 1980 - Giangdong hillstream loach Species Liniparhomaloptera qiongzhongensis Zheng & Chen, 1980 - Wanquan hillstream loach GENUS Neogastromyzon Popta, 1905 - hillstream loaches Species Neogastromyzon brunei Tan, 2006 - Brune's hillstream loach Species Neogastromyzon chini Tan, 2006 - Chin hillstream loach Species Neogastromyzon crassiobex Tan, 2006 - crassiobex hillstream loach Species Neogastromyzon kottelati Tan, 2006 - Sungai Hulu hillstream loach Species Neogastromyzon nieuwenhuisii Popta, 1905 - Howong hillstream loach Species Neogastromyzon pauciradiatus (Inger & Chin, 1961) - pauciradiatus hillstream loach GENUS Paraprotomyzon Pellegrin & Fang, 1935 - hillstream loaches Species Paraprotomyzon bamaensis Tang, 1997 - Bama hillstream loach Species Paraprotomyzon lungkowensis Xie et al., 1984 - Lungkow hillstream loach Species Paraprotomyzon multifasciatus Pellegrin & Fang, 1935 - Kwai-chow hillstream loach Species Paraprotomyzon niulanjiangensis Lu et al., 2005 - Niulanjiang hillstream loach GENUS Parhomaloptera Vaillant, 1902 - hillstream loaches Species Parhomaloptera microstoma (Boulenger, 1899) - Akar hillstream loach [=obscura] GENUS Plesiomyzon Zheng & Chen, 1980 - hillstream loaches Species Plesiomyzon baotingensis Zheng & Chen, 1980 - Baoting hillstream loach GENUS Protomyzon Hora, 1932 - hillstream loaches [=Progastromyzon] Species Protomyzon aphelocheilus Inger & Chin, 1962 - Tambunan hillstream loach Species Protomyzon borneensis Hora & Jayaram, 1952 - Kina Balu hillstream loach Species Protomyzon griswoldi (Hora & Jayaram, 1952) - Griswold hillstream loach Species Protomyzon whiteheadi (Vaillant, 1893) - Whitehead hillstream loach GENUS Pseudogastromyzon Nichols, 1925 - hillstream loaches [=Labigastromyzon] Species Pseudogastromyzon changtingensis Liang, 1942 - Chang ting-hsian hillstream loach [=tungpeiensis] Species Pseudogastromyzon cheni Liang, 1942 - Chen's hillstream loach Species Pseudogastromyzon daon (Mai, 1978) - daon hillstream loach Species Pseudogastromyzon fangi (Nichols, 1931) - Fang's hillstream loach Species Pseudogastromyzon fasciatus (Sauvage, 1878) - Tonkin hillstream loach [=jiulongjiangensis, zebroidus] Species Pseudogastromyzon laticeps Chen & Zheng, in Zheng & Chen, 1980 - laticeps hillstream loach Species Pseudogastromyzon lianjiangensis Zheng, 1981 - Lianjiang hillstream loach Species Pseudogastromyzon meihuashanensis Li, 1998 - Meihuashan hillstream loach Species Pseudogastromyzon myersi Herre, 1932 - Myers' hillstream loach [=maculatum] Species Pseudogastromyzon peristictus Zheng & Li, 1986 - Fengshun Xian hillstream loach GENUS Sewellia Hora, 1932 - hillstream loaches [=Diardichthys, Parasewellia] Species Sewellia albisuera Freyhof, 2003 - Thu Bon hillstream loach [=tetralobata] Species Sewellia analis Nguyen & Nguyen, in Nguyen, 2005 - Hong Van hillstream loach Species Sewellia breviventralis Freyhof & Serov, 2000 - butterfly loach Species Sewellia diardi Roberts, 1998 - diardi hillstream loach Species Sewellia elongata Roberts, 1998 - elongata hillstream loach Species Sewellia hypsicrateae Endruweit & Nguyen, 2016 - Dakrong hillstream loach Species Sewellia lineolata (Valenciennes, in Cuvier & Valenciennes, 1846) - reticulated hillstream loach [=songboensis] Species Sewellia marmorata Serov, 1996 - marmorata hillstream loach Species Sewellia medius Nguyen & Nguyen, in Nguyen, 2005 - tiger hillstream loach [=brevis] Species Sewellia monolobata (Nyguyen & Nguyen, in Nguyen, 2005) - Quang Nam hillstream loach [=polylobata] Species Sewellia patella Freyhof