FAMILY Fowler, 1950 - hillstream [=Gastromyzoninae, Lepidoglanidae, Crossostominae, Pseudogastromyzoni, Glaniopsini, Parhomalopterini, Beaufortini] Notes: Gastromyzoninae Fowler, 1905b:477 [ref. 1370] (subfamily) [stem corrected to Gastromyzont- by Inger & Chin 1961:168 [ref. 9356], confirmed by Steyskal 1980:173 [ref. 14191], by Nelson 1984:128 [ref. 13596], by Rainboth 1996:126 [ref. 22772] and by Kottelat 2012:57 [ref. 32367]] Lepidoglanidae Jordan, 1923a:149 [ref. 2421] (family) Lepidoglanis [correct stem is Lepidoglanid- Kottelat 2012:57 [ref. 32367]] Crossostominae Silas, 1953:179, 219 [ref. 4024] (subfamily) Crossostoma Sauvage [correct stem is Crossostomat- Kottelat 2012:57 [ref. 32367], Kottelat 2013b:191 [ref. 32989]; invalid, Article 39] Pseudogastromyzoni Silas, 1953:229 [ref. 4024] (division) [correct stem is Pseudogastromyzont- Kottelat 2012:57 [ref. 32367], Kottelat 2013b:191 [ref. 32989]] Glaniopsini Silas, 1953:259 [ref. 4024] (division) Parhomalopterini Chen, 1980:207 [ref. 32172] (group) Parhomaloptera Beaufortini Chen, 1980:207 [ref. 32172] (group) [correct stem is Beauforti- Kottelat 2012:57 [ref. 32367], Kottelat 2013b:191 [ref. 32989]]

GENUS Hora, 1932 - hillstream loaches [=Annamia Hora [S. L.], 1932:306] Notes: [ref. 2208]. Fem. Parhomaloptera normani Hora, 1931. Type by original designation (also monotypic). See Das 2003:361 [ref. 27706] dated to 1933. •Valid as Annamia Hora, 1932 -- (Silas 1953:221 [ref. 4024], Sawada 1982:205 [ref. 14111], Kottelat 1985:267 [ref. 11441], Kottelat 1989:12 [ref. 13605], Doi 1997:27 [ref. 22832], Kottelat 2012:57 [ref. 32367], Kottelat 2013:191 [ref. 32989]). Current status: Valid as Annamia Hora, 1932. Gastromyzontidae.

Species Annamia normani (Hora, 1931) - Annam hillstream (author) [=Parhomaloptera normani Hora [S. L.], 1931:584, Pl. 15] Notes: [Annals and Magazine of Natural History (Series 10) v. 6 (no. 35); ref. 16299] Kontum, Annam, . Current status: Valid as Annamia normani (Hora, 1931). Gastromyzontidae. Distribution: Vietnam. : freshwater.

Species Annamia thuathienensis Nguyen, in Nguyen, 2005 - Thua Thien (author) [=Annamia thuathienensis Nguyen [V. H.], in Nguyen, 2005:579, Fig. 21] Notes: [Freshwater of Vietnam v. 2; ref. 29730] Bô River, Thua Thiên Province, Huê, Vietnam. Holotype: Univ. Su Pham, Ha Noi. Current status: Valid as Annamia thuathienensis Nguyen, 2005. Gastromyzontidae. Distribution: Bô River, Thua Thiên Province, Huê, Vietnam. Habitat: freshwater.

GENUS Beaufortia Hora, 1932 - hillstream loaches [=Beaufortia Hora [S. L.], 1932:318] Notes: [ref. 2208]. Fem. Gastromyzon leveretti Nichols & Pope, 1927. Type by original designation. See Das 2003:361 [ref. 27706] dated 1933. •Valid as Beaufortia Hora, 1932 -- (Silas 1953:234 [ref. 4024], Chen 1980:112 [ref. 6901], Sawada 1982:205 [ref. 14111], Zheng in Pan et al. 1991:284 [ref. 23876], Chen in Chen 1998:262 [ref. 23556], Tang & Chen 2000:7 [ref. 25445], Chen & Tang in Yue et al. 2000:503 [ref. 25272], Chen et al. 2009:639, 641 [ref. 30359], Kottelat 2012:57 [ref. 32367], Kottelat 2013:191 [ref. 32989], Zhang et al. 2016:157 [ref. 34477]). Current status: Valid as Beaufortia Hora, 1932. Gastromyzontidae.

Species Beaufortia cyclica Chen, 1980 - Longzhow hillstream loach (author) [=Beaufortia cyclica Chen [Y.-Y.], 1980:115 (English p. 120), Fig. 6, Beaufortia polliciformis Dai [D.-Y.], in Zheng, 1981:172, Fig. 142] Notes: [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] West River, Longzhow Xian, Guangxi Province, China. Current status: Valid as Beaufortia cyclica Chen 1980. Gastromyzontidae. Distribution: China. Habitat: freshwater. (polliciformis) [Freshwater fishes of Guangxi Province 1981; ref. 23151] Dong-Gui, Long-Zhou, Guangxi, China. Current status: Synonym of Beaufortia cyclica Chen, 1980. Gastromyzontidae. Habitat: freshwater. Species Beaufortia huangguoshuensis Zheng & Zhang, 1987 - Huangguoshu hillstream loach (author) [=Beaufortia huangguoshuensis Zheng [C.-Y.] & Zhang [W.], 1987:80 [English p. 85]] Notes: [Journal Sci. Med. Jinan University 1987 (no. 3); ref. 17741] Dabang River, Zhujiang River system, upstream of Huangguoshu Falls, Zhenning County, Guizhou Province, China. Current status: Valid as Beaufortia huangguoshuensis Zheng & Zhang, 1987. Gastromyzontidae. Distribution: Nanpanjiang, branch of Zhujiang River, China. Habitat: freshwater.

Species Tang & Wang, 1997 - Sandu hillstream loach (author) [=Beaufortia intermedia Tang [W.-Q.] & Wang [D.-Z.], in Tang, Wang & Yu, 1997:19] Notes: [English p. 22], Fig. 1 [Zoological Research v. 18 (no. 1); ref. 23718] 107°74'N [sic], 25°58'E, Sandu County, Guizhou, China. Current status: Valid as Beaufortia intermedia Tang & Wang, 1997. Gastromyzontidae. Distribution: China. Habitat: freshwater.

Species (Fang, 1931) - Kweichow hillstream loach (author) [=Gastromyzon leveretti kweichowensis Fang [P.-W.], 1931:41, Fig. 1, Beaufortia kweichowensis gracilicauda Chen [Y.-Y.] & Zheng [C.-Y.], in Zheng & Chen, 1980:97 [101], Fig. 8] Notes: [Sinensia v. 2 (no. 3); ref. 16365] San-ho Hsien, Kweichow [Guizhou], China, elevation 650 feet. Current status: Valid as Beaufortia kweichowensis (Fang, 1931). Gastromyzontidae. Distribution: Xijiang River, China. Habitat: freshwater. (gracilicauda) [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] East River, Xinfeng Xian, and North River, Shaoguan Shi, Guangdong, China. Current status: Synonym of Beaufortia kweichowensis (Fang, 1931). Gastromyzontidae. Distribution: Dongjiang and Beijiang rivers, Guangdong Province, China. Habitat: freshwater.

Species (Nichols & Pope, 1927) - Nodoa hillstream loach (author) [=Gastromyzon leveretti Nichols [J. T.] & Pope [C. H.], 1927:340, Fig. 12] Notes: [Bulletin of the American Museum of Natural History v. 54 (art. 2); ref. 5747] Nodoa, Hainan Island, China. Current status: Valid as Beaufortia leveretti (Nichols & Pope, 1927). Gastromyzontidae. Distribution: Hainan Island, China. Habitat: freshwater.

Species Chang, 1944 - Loshan hillstream loach (author) [=Beaufortia liui Chang [H.-W.], 1944:55, Fig. 3] Notes: [Sinensia v. 15 (nos 1-6); ref. 5136] Loshan and Yaan, Sichian, western China. Current status: Valid as Beaufortia liui Chang, 1944. Gastromyzontidae. Distribution: Upper reaches of Yangtze River, China. Habitat: freshwater.

Species Beaufortia niulanensis Chen et al., 2009 - Niulan hillstream loach (author) [=Beaufortia niulanensis Chen [Z.-M.], Huang [Y.-F.] & Yang [J.-X.], 2009:639, Figs.1-3] Notes: [Acta Zootaxonomica Sinica v. 34 (no. 3); ref. 30359] Middle reach of the Niulan Jiang River, Deze Town, Zhanyi County,Yunnan Province, China, elevation 603 meters. Current status: Valid as Beaufortia niulanensis Chen, Huang & Yang, 2009. Gastromyzontidae. Distribution: Niulan Jiang River, Yunnan Province, China. Habitat: freshwater.

Species Beaufortia pingi (Fang, 1930) - Ping hillstream loach (author) [=Gastromyzon pingi Fang [P.-W.], 1930:31, Pl. 1 (figs. 3-5)] Notes: [Sinensia v. 1 (no. 3); ref. 1296] Stream in Lin-yueng-shien, northwestern Kwangsi, China, elevation 2100 feet. Current status: Valid as Beaufortia pingi (Fang, 1930). Gastromyzontidae. Distribution: Xijiang and its branch Nanpanjiang River, China. Habitat: freshwater. Species Beaufortia polylepis Chen, in Zheng et al., 1982 - Yiliang hillstream loach (author) [=Beaufortia polylepis Chen [Y.-R.], in Zheng, Chen & Huang, 1982:397 (English p. 402), Fig. 4] Notes: [Zoological Research v. 3 (no. 4); ref. 21355] Yiliang Xian, Yunnan Province, China. Current status: Valid as Beaufortia polylepis Chen, 1982. Gastromyzontidae. Distribution: Nanpang River, branch of Xijiang River, China. Habitat: freshwater.

Species Beaufortia szechuanensis (Fang, 1930) - Omei-shien hillstream loach (author) [=Gastromyzon szechuanensis Fang [P.-W.], 1930:36, Fig. 7] Notes: [Contributions from the Biological Laboratory of the Science Society of China. (Zoological Series) v. 6 (no. 4); ref. 16080] Omei-shien, western Szechuan, China, elevation 1900 feet. Current status: Valid as Beaufortia szechuanensis (Fang, 1930). Gastromyzontidae. Distribution: Upper reaches of Changjiang River and its branch Qin River, China. Habitat: freshwater.

Species Beaufortia yunnanensis (Li et al., in Li et al., 1998) - Yunnan beaufortia loach (author) [=Paraprotomyzon yunnanensis Li [W.-X.], Lu [Z.-M.] & Mao [W.-N.], in Li, Mao, Lu, Sun & Lu, 1998:4, Fig. 2] Notes: [Chinese Journal of Fisheries v. 11 (no. 1); ref. 28154] Huang-Ni He, Nanpanjiang system, Neigei, Luoping Co, 24°20'N,104°30'E, Yunnan Province, China. Current status: Valid as Beaufortia yunnanensis (Li, Lu & Mao, 1998). Gastromyzontidae. Distribution: Yunnan Province, China. Habitat: freshwater.

Species Beaufortia zebroida (Fang, 1930) - zebroidus hillstream loach (author) [=Gastromyzon pingi zebroidus Fang [P.-W.], 1930:35, Pl. 2 (figs. 6-7 [not 1-2]), Beaufortia fasciolata Nguyen [V. H.], 2005:588, Fig. 26, Beaufortia multiocellata Nguyen [V. H.], 2005:592, Fig. 28] ] Notes: [Sinensia v. 1 (no. 3); ref. 1296] Tung-kwei, Lung-chow [Longzhou], southwestern Kwangsi, China. Current status: Valid as Beaufortia zebroida (Fang, 1930). Gastromyzontidae. Distribution: Xijiang River, China. Habitat: freshwater. (fasciolata) [Freshwater fishes of Vietnam v. 2; ref. 29730] Bang Giant River, at Cao Bang, Vietnam. Current status: Synonym of Beaufortia zebroida (Fang, 1930). Gastromyzontidae. Distribution: Bang Giang River, Cao Bang, Vietnam [if valid]. Habitat: freshwater. (multiocellata) [Freshwater fishes of Vietnam v. 2; ref. 29730] Bang Giang River, Cao Bang, Vietnam. Current status: Synonym of Beaufortia zebroida (Fang, 1930). Gastromyzontidae. Distribution: Bang river system, Cao Bang, Vietnam (if valid). Habitat: freshwater.

GENUS Erromyzon Kottelat, 2004 - hillstream loaches [=Erromyzon Kottelat [M.], 2004:306] Notes: [ref. 27994]. sinensis Chen, 1980. Type by original designation. •Valid as Erromyzon Kottelat, 2004 -- (Neely et al. 2007:98 [ref. 29196], Yang et al. 2012:173 [ref. 32329], Kottelat 2012:60 [ref. 32367], Kottelat 2013:191 [ref. 32989], Zhang et al. 2016:153 [ref. 34477], Xiu & Yang 2017:[1] [ref. 35089]). Current status: Valid as Erromyzon Kottelat, 2004. Gastromyzontidae.

Species Erromyzon compactus Kottelat, 2004 - Ba Che hillstream loach (author) [=Erromyzon compactus Kottelat [M.], 2004:307, Figs. 8-9] Notes: [Ichthyological Exploration of Freshwaters v. 15 (no. 4); ref. 27994] 4 kilometers upriver of Ba Che city, 21°16'34"N, 107°14'54"E, Ba Che River, Quang Ninh Province, Vietnam. Current status: Valid as Erromyzon compactus Kottelat, 2004. Gastromyzontidae. Distribution: Northeastern Vietnam. Habitat: freshwater.

Species Erromyzon damingshanensis Xiu & Yang, 2017 - Naxue hillstream loach (author) [=Erromyzon damingshanensis Xiu [L.-H.] & Yang [J.], 2017:[2], Figs. 1-3] Notes: [Environmental Biology of Fishes First online; ref. 35089] Tributary of Qingshuihe river in Naxue village, Dafeng Town, Shanglin County, Guangxi, China, 23°28′19′′N, 108°34′13′′E, elevation 119 meters. Current status: Valid as Erromyzon damingshanensis Xiu & Yang, 2017. Gastromyzontidae. Distribution: Hongshuihe River, Pearl River drainage, Guangxi, China. Habitat: freshwater.

Species Erromyzon kalotaenia Yang et al., 2012 - Changle hillstream loach (author) [=Erromyzon kalotaenia Yang [J.], Kottelat [M.], Yang [J.-X.] & Chen [X.-Y.], 2012:180, Fig. 6] Notes: [Zootaxa No. 3586; ref. 32329] Changle village (Liuding river), Jinxiu County, Guangxi, China; 24°22′54.3″N, 110°06′38.7″E, altitude 256 meters. Current status: Valid as Erromyzon kalotaenia Yang, Kottelat, Yang & Chen, 2012. Gastromyzontidae. Distribution: Guangxi, China. Habitat: freshwater.

Species Erromyzon sinensis (Chen, 1980) - Lonsheng hillstream loach (author) [=Protomyzon sinensis Chen [Y.-Y.], 1980:106 (English p. 119), Fig. 4] Notes: [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] West River, Lonsheng Xian, Lipu Xian and Jinxiu Xian, Guangxi Province, China. Current status: Valid as Erromyzon sinensis (Chen, 1980). Gastromyzontidae. Distribution: Xijiang River, China. Habitat: freshwater.

Species Erromyzon yangi Neely et al., 2007 - Yang's hillstream loach (author) [=Erromyzon yangi Neely [D. A.], Conway [K. W.] & Mayden [R. L.], 2007:98, Figs. 1, 4a] Notes: [Ichthyological Exploration of Freshwaters v. 18 (no. 2); ref. 29196] Xi Jiang, a tributary of the Zhu Jiang (Pearl River), near the village of Meicun, 24°03.508'N, 110°06.611'E, Jinxiu County, Guangxi, China, elevation 624 meters. Current status: Valid as Erromyzon yangi Neely, Conway & Mayden, 2007. Gastromyzontidae. Distribution: Guangxi, China. Habitat: freshwater.

GENUS Oshima, 1919 - hillstream loaches [=Formosania Oshima [M.], 1919:194, Crossostoma Sauvage [H.-E.], 1878:88] Notes: [ref. 3312]. Fem. Formosania gilberti Oshima, 1919. Type by original designation (also monotypic). Misspelled Formosiana in Zoological Record for 1919. •Valid as Formosania Oshima, 1919 -- (Silas 1953:229 [ref. 4024] but with type as lacustre Steindachner). •Synonym of Crossostoma Sauvage, 1878 -- (Chen 1980:102 [ref. 6901], Zheng in Pan et al. 1991:272 [ref. 23876], Chen & Tang in Yue et al. 2000:465 [ref. 25272]). •Valid as Formosania Oshima, 1919 -- (Novák et al. 2006:92 [ref. 28661], Ho & Shao 2011:31 [ref. 31432], Kottelat 2012:60 [ref. 32367], Zhang et al. 2016:158 [ref. 34477]). Current status: Valid as Formosania Oshima, 1919. Gastromyzontidae. (Crossostoma) [ref. 3878]. Neut. Crossostoma davidi Sauvage, 1878. Type by monotypy. Preoccupied by Crossostoma Morris & Lycett, 1851 in Mollusca [currently treated as a synonym of Amphicteis Grube, 1850], Crossostoma Gosse, 1855 in Polychaeta, and by Crossostoma Agassiz, 1862 in Cnidaria; apparently not replaced. An available name is Formosania, and this name was used by Novák et al. 2006:92 [ref. 28661]. •Incorrectly treated as valid as Crossostoma Sauvage, 1878 -- (Silas 1953:222 [ref. 4024], Chen 1980:102 [ref. 6901], Sawada 1982:205 [ref. 14111], Zheng in Pan et al. 1991:272 [ref. 23876], Tang & Chen 2000:5 [ref. 25445], Chen & Tang in Yue et al. 2000:465 [ref. 25272], Zhang & Wang 2011:85 [ref. 31283]). •Synonym of Formosania Oshima, 1919 -- (Novák et al. 2006:92 [ref. 28661], Zhang et al. 2016:158 [ref. 34477]). Current status: Synonym of Formosania Oshima, 1919. Gastromyzontidae.

Species Formosania chenyiyui (Zheng, 1991) - Chenyiyui hillstream loach (author) [=Crossostoma chenyiyui Zheng [C.-Y.], 1991:79 (English p. 81), Fig. 1] Notes: [Jinan-Daxue-xuebao = Journal of Jinan University. Ser.: Ziran kexue yu yi yixue ban = Natural science and medicine edition. v. 12 (no. 1); ref. 20105] Chang Xian, Fujian, China. Current status: Valid as Formosania chenyiyui (Zheng, 1991). Gastromyzontidae. Distribution: Hanjiang River, China. Habitat: freshwater. Species Formosania davidi (Sauvage, 1878) - David's hillstream loach (author) [=Crossostoma davidi Sauvage [H.-E.], 1878:89 [4] Notes: [Bulletin de la Société philomathique de Paris (7th Série) v. 2; ref. 3878] Tokien occidental, elevation 1200 meters [? 3000 meters]. Current status: Valid as Formosania davidi (Sauvage, 1878). Gastromyzontidae. Distribution: Mingjiang River, China. Habitat: freshwater.

Species Formosania fascicauda (Nichols, 1926) - Fuching hillstream loach (author) [=Crossostoma fascicauda Nichols [J. T.], 1926:2, Fig. 2, Crossostoma fascicauda foochowensis Tchang [T.-L.], 1932:123, Figs. 3-4] Notes: [American Museum Novitates No. 224; ref. 15601] Fuching Hsien, Fukien [Fujian] Province, China. Current status: Valid as Formosania fascicauda (Nichols 1926). Gastromyzontidae. Distribution: Fujian Province, China. Habitat: freshwater. (foochowensis) [Bulletin of the Fan Memorial Institute of Biology, Peiping (Zooogical Series) v. 3 (no. 9); ref. 16402] Foochow, Fukien, China. Current status: Synonym of Formosania fascicauda (Nichols, 1926). Gastromyzontidae. Habitat: freshwater.

Species Formosania fasciolata (Wang et al., 2006) - Rivulet hillstream loach (author) [=Crossostoma fasciolatus Wang [H.-G.], Fan [Z.-Y.] & Chen [Y.], 2006:902, Figs. 1-2] Notes: [Acta Zootaxonomica Sinica v. 31 (no. 4); ref. 28974] Rivulet in Wuyanling Natural Resources, Feiyun River system, Taishun County, Zhejiang, China. Current status: Valid as Formosania fasciolata (Wang, Fan & Chen, 2006). Gastromyzontidae. Distribution: Feiyun River system, China. Habitat: freshwater.

Species Formosania galericula (Zhang, in Zhang & Wang, 2011) - galericula hillstream loach (author) [=Crossostoma galericula Zhang [X.-F.], in Zhang & Wang, 2011:85, Fig. 1] Notes: [Journal of the Shanghai Ocean University v. 20 (no 1); ref. 31283] Rivulet in Hehu Town, Qingyuan County, Zhejiang Province, China. Current status: Valid as Formosania galericula (Zhang, 2011). Gastromyzontidae. Distribution: Zhejiang Province, China. Habitat: freshwater.

Species Formosania lacustris (Steindachner, 1908) - lacustre hillstream loach (author) [=Crossostoma lacustre Steindachner [F.], 1908:110, formosanum Steindachner [F.], 1908:86, Formosania gilberti Oshima [M.], 1919:194, Pl. 49 (figs. 1-2), Crossostoma tengi Watanabe [M.], 1983:111, Figs. 5, 6b, 7b] ] Notes: [Anzeiger der Akademie der Wissenschaften in Wien v. 45 (no. 8); ref. 18802] Taiwan. Current status: Valid as Formosania lacustris (Steindachner, 1908). Gastromyzontidae. Distribution: Southeast Asia. Habitat: freshwater. (formosanum) [Anzeiger der Akademie der Wissenschaften in Wien v. 45 (no. 7); ref. 18801] Lake Candidius, Taiwan. Current status: Synonym of Formosania lacustre (Steindachner, 1908). Gastromyzontidae. Habitat: freshwater. (gilberti) [Annals of the Carnegie Museum v. 12 (nos 2-4); ref. 3312] Tamusui River near Shinten, Taiwan. Current status: Synonym of Formosania lacustre (Steindachner, 1908). Gastromyzontidae. Habitat: freshwater. (tengi) [Bulletin of the Biogeographical Society of Japan v. 38 (no. 11); ref. 8266] Kaochung, Kaoshiung County, Taiwan. Current status: Synonym of Formosania lacustris (Steindachner, 1908). Gastromyzontidae. Distribution: Taiwan. Habitat: freshwater.

Species Formosania paucisquama (Zheng, 1981) - paucisquama hillstream loach (author) [=Crossostoma paucisquama Zheng [C.-Y.], 1981:57 [English p. 62], Fig. 1] Notes: [Journal of Jinan University (Natural Science) v. 1; ref. 22557] Mountain creek, Danan Shan, Lianjiang system, Puning Xian, Guangdong Province, China. Current status: Valid as Formosania paucisquama (Zheng, 1981). Gastromyzontidae. Distribution: Liangjiang, Yongjiang, and Hanjiang rivers, China. Habitat: freshwater. Species Formosania stigmata (Nichols, 1926) - stigmata hillstream loach (author) [=Crossostoma stigmata Nichols [J. T.], 1926:4, Fig. 3] Notes: [American Museum Novitates No. 224; ref. 15601] Fukien [Fukien], China. Current status: Valid as Formosania stigmata (Nichols, 1926). Gastromyzontidae. Distribution: From Minjiang to Hanjiang rivers, China. Habitat: freshwater.

Species Formosania tinkhami (Herre, 1934) - Tinkham's hillstream loach (author) [=Crossostoma tinkhami Herre [A. W. C. T.], 1934:286] Notes: [Lingnan Science Journal, Canton v. 13 (no. 2); ref. 10988] Loh Fau Shan, Kwangtung Province, China, elevation 3500 feet. Current status: Valid as Formosania tinkhami (Herre, 1934). Gastromyzontidae. Distribution: Dongjiang River, China. Habitat: freshwater.

GENUS Gastromyzon Gunther, 1874 - hillstream loaches [=Gastromyzon Günther [A.], 1874:454, Lepidoglanis Vaillant [L. L.], 1889:82] Notes: [ref. 5753]. Masc. Gastromyzon borneensis Günther, 1874. Type by monotypy. Kottelat (2013) places in the family Gastromyzonidae. •Valid as Gastromyzon Günther, 1874 -- (Silas 1953:240 [ref. 4024], Sawada 1982:206 [ref. 14111], Roberts 1982 [ref. 6689], Roberts 1989:85 [ref. 6439], Doi 1997:27 [ref. 22832], Tan & Martin-Smith 1998:366 [ref. 23646], Rachmatika 1998:651 [ref. 23901], Leh & Chai 2003:275 [ref. 28608], Tan & Sulaiman 2006:1 [ref. 28496], Tan & Leh 2006:1 [ref. 28497], Tan 2006:51 [ref. 28716], Kottelat 2012:61 [ref. 32367], Kottelat 2013:192 [ref. 32989]). Current status: Valid as Gastromyzon Günther, 1874. Gastromyzontidae. (Lepidoglanis) [ref. 4483]. Fem. Lepidoglanis monticola Vaillant, 1889. Type by monotypy. •Synonym of Gastromyzon Günther, 1874 -- (Roberts 1982:500 [ref. 6689], Roberts 1989:85 [ref. 6439], Tan 2006:51 [ref. 28716], Kottelat 2012:61 [ref. 32367] treated as femine, Kottelat 2013:192 [ref. 32989]). Current status: Synonym of Gastromyzon Günther, 1874. Gastromyzontidae. Species Gastromyzon aequabilis Tan, 2006 - Kuamut hillstream loach (author) [=Gastromyzon aequabilis Tan [H. H.], 2006:147, Figs. 89-91] Notes: [The Borneo Suckers; ref. 28716] Unnamed stream at kilometer 111 on main line west after turnoff to Borneo Rainforest Lodge, 5°01'06.0"N, 117°32'38.4"E, Kuamut, Danum Valley, Lahad Datu, Sabah, Malaysia. Current status: Valid as Gastromyzon aequabilis Tan, 2006. Gastromyzontidae. Distribution: Kuamut drainage of the Kinabatangan River basin, eastern Sabah, Malaysia. Habitat: freshwater.

Species Gastromyzon aeroides Tan & Sulaiman, 2006 - Sungai hillstream loach (author) [=Gastromyzon aeroides Tan [H. H.] & Sulaiman [Z. H.], 2006:9, Figs. 3-4] Notes: [Zootaxa No. 1117; ref. 28496] Sungai Malamus, about 9 kilometers into track, tributary to Mengalong River, 4°59.120'N, 115°37.581'E, Siptang, Mengalong River basin, Sabah, elevation 50 meters. Current status: Valid as Gastromyzon aeroides Tan & Sulaiman, 2006. Gastromyzontidae. Distribution: Western Sabah and Brunei Darussalam, Borneo. Habitat: freshwater.

Species Gastromyzon auronigrus Tan, 2006 - Kampong hillstream loach (author) [=Gastromyzon auronigrus Tan [H. H.], 2006:177, Pl. 17B; figs. 113-114] Notes: [The Borneo Suckers; ref. 28716] Kampong Loguhang, about 6 kilometers downstream of Serinsim Sta., 6°19.733'N, 116°44.403'E, Sungai Kinarom, Marak Parak, Kota Marudu, Sabah, Malaysia, elevation 120 meters. Current status: Valid as Gastromyzon auronigrus Tan, 2006. Gastromyzontidae. Distribution: Sungai Kinarom draining into Marudu Bay, Sabah, Malaysia. Habitat: freshwater.

Species Gastromyzon bario Tan, 2006 - Bario hillstream loach (author) [=Gastromyzon bario Tan [H. H.], 2006:76, Pl. 11A; figs. 33-36] Notes: [The Borneo Suckers; ref. 28716] Headwaters of Sungai Padapur, near Bario (3500 ft), Arur Dalan, Baram River basin, Sarawak, Malaysia. Current status: Valid as Gastromyzon bario Tan, 2006. Gastromyzontidae. Distribution: Upper Trusan, Limbang and middle to upper Baram River basins, North Sarawak. Habitat: freshwater.

Species Gastromyzon borneensis Günther, 1874 - Sabah hillstream loach (author) [=Gastromyzon borneensis Günther [A.], 1874:454 [6]] Notes: [Annals and Magazine of Natural History (Series 4) v. 14 (no. 84) (art. 55); ref. 5753] Mountain torrents of interior of Borneo (sources of Mingalong River), Sabah. Current status: Valid as Gastromyzon borneensis Günther, 1874. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon contractus Roberts, 1982 - Tebelian hillstream loach (author) [=Gastromyzon contractus Roberts [T. R.], 1982:504, Figs. 2, 6] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Tebelian, where it flows into Sungai Pinoh, 19 kilometers upstream from Nangapinoh, 0°30'S, 111°45'E, Kalimantan Barat, Borneo. Current status: Valid as Gastromyzon contractus Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon cornusaccus Tan, 2006 - Kota Marudu hillstream loach (author) [=Gastromyzon cornusaccus Tan [H. H.], 2006:68, Pl. 10B; figs. 25-26] Notes: [The Borneo Suckers; ref. 28716] Kota Marudu, Sungai Kinarom, Marudu Bay basin, Sabah, Malaysia. Current status: Valid as Gastromyzon cornusaccus Tan, 2006. Gastromyzontidae. Distribution: Sungai Kinarom draining into the Marudu Bay, Malaysia. Habitat: freshwater. Species Gastromyzon cranbrooki Tan & Sulaiman, 2006 - Temburong hillstream loach (author) [=Gastromyzon cranbrook Tan [H. H.] & Sulaiman [Z. H.], 2006:3, Figs. 1-2] Notes: [Zootaxa No. 1117; ref. 28496] Sungai Belalong, in front and near to Kuala Belalong Field Studies Centre, 4°32'50.4"N, 115°09'27.6"E, Temburong River basin, Temburong District, Brunei Darussalam, elevation 80 meters. Current status: Valid as Gastromyzon cranbrooki Tan & Sulaiman, 2006. Gastromyzontidae. Distribution: Temburong River basin, Brunei Darussalam, Borneo. Habitat: freshwater.

Species Gastromyzon crenastus Tan & Leh, 2006 - Serian hillstream loach (author) [=Gastromyzon crenastus Tan [H. H.] & Leh [C. U. M.], 2006:9, Figs. 3-4] Notes: [Zootaxa No. 1126; ref. 28497] Serian, Sungai Kuhas, 6.9 kilometers from Tebeu Tebakang turnoff, 5.8 kilometers inside right road, 1°09'10.0"N, 110°29"22.7"E, Sadong River basin, Sarawak, Borneo. Current status: Valid as Gastromyzon crenastus Tan & Leh, 2006. Gastromyzontidae. Distribution: Sadong River basin, Sarawak, Borneo. Habitat: freshwater.

Species Gastromyzon ctenocephalus Roberts, 1982 - Senah hillstream loach (author) [=Gastromyzon ctenocephalus Roberts [T. R.], 1982:505, Fig. 7] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Senah, Sarawak state, Borneo, Malaysia. Current status: Valid as Gastromyzon ctenocephalus Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon danumensis Chin & Inger, 1989 - Sungei Palum hillstream loach (author) [=Gastromyzon danumensis Chin [P. K.] & Inger [R. F.], 1989:54, Fig. 1] Notes: [[The] Malayan Nature Journal v. 43 (no. 1); ref. 17653] Sungei Palum Tambun, tributary of Segama River, Danum Valley Conservation Area, Lahad Datu District, Sabah, Malaysia. Current status: Valid as Gastromyzon danumensis Chin & Inger, 1989. Gastromyzontidae. Distribution: Segma River basin, eastern Sabah, Malaysia. Habitat: freshwater.

Species Gastromyzon embalohensis Rachmatika, 1998 - Embaloh hillstream loach (author) [=Gastromyzon embalohensis Rachmatika [I.], 1998:652, Figs. 1-2] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23901] High gradient stream near confluence with Sungai Tekelan, tributary of Embaloh River (1°26'6.46"N, 112°28'1,96"E), Indonesia, elevation 130 meters. Current status: Valid as Gastromyzon embalohensis Rachmatika, 1998. Gastromyzontidae. Distribution: West Kalimantan Barat, Indonesia. Habitat: freshwater.

Species Gastromyzon extrorsus Tan, 2006 - Petagas hillstream loach (author) [=Gastromyzon extrorsus Tan [H. H.], 2006:70, Pl. 10C; figs. 27-29] Notes: [The Borneo Suckers; ref. 28716] Kampong Kibunut, 5°53,301'N, 116°14.102'E, Sungai Moyog, Penampang River, Petagas basin, Penampang, Sabah, East Malaysia, elevation 225 meters. Current status: Valid as Gastromyzon extrorsus Tan, 2006. Gastromyzontidae. Distribution: Kimanis and Petagas river basins, West Sabah, East Malaysia. Habitat: freshwater.

Species Gastromyzon farragus Tan & Leh, 2006 - farragus hillstream loach (author) [=Gastromyzon farragus Tan [H. H.] & Leh [C. U. M.], 2006:15, Figs. 5-6] Notes: [Zootaxa No. 1126; ref. 28497] Serian, Sungai Kuhas, 6.9 kilometers from Tebeu Tebakang turnoff, 5.8 kilometers inside right road, 1°09'10.0"N, 110°29"22.7"E, Sadong River basin, Sarawak, Borneo. Current status: Valid as Gastromyzon farragus Tan & Leh, 2006. Gastromyzontidae. Distribution: Sadong River basin, Sarawak, Borneo. Habitat: freshwater. Species Gastromyzon fasciatus Inger & Chin, 1961 - Sungei Putai hillstream loach (author) [=Gastromyzon fasciatus Inger [R. F.] & Chin [P. K.], 1961:173] Notes: [Copeia 1961 (no. 2); ref. 9356] Sungei Dapu River near mouth of Sungei Putai, 1°48'N, 113°45'E, Sarawak state, Borneo, East Malaysia. Current status: Valid as Gastromyzon fasciatus Inger & Chin, 1961. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon ingeri Tan, 2006 - Inger hillstream loach (author) [=Gastromyzon ingeri Tan [H. H.], 2006:149, Figs. 92-94] Notes: [The Borneo Suckers; ref. 28716] Tawau River, Tawau Hills Parl, Tawau, Sabah, Malaysia, elevation 270 meters. Current status: Valid as Gastromyzon ingeri Tan, 2006. Gastromyzontidae. Distribution: Draining into Wallace Bay, Sabah, Malaysia. Habitat: freshwater.

Species Gastromyzon introrsus Tan, 2006 - Crocker hillstream loach (author) [=Gastromyzon introrsus Tan [H. H.], 2006:72, Pl. 10D; figs. 30-32] Notes: [The Borneo Suckers; ref. 28716] Mile 1 from Keningau to Crocker Range National Park HQ, Padas basin, 5°21.206'N, 116°07.532'E, Sungai Agudon, Keningau, Sabah, East Malaysia, elevation 395 meters. Current status: Valid as Gastromyzon introrsus Tan, 2006. Gastromyzontidae. Distribution: Padas and Labuk River basins, Malaysia. Habitat: freshwater.

Species Gastromyzon katibasensis Leh & Chai, 2003 - Menyarin hillstream loach (author) [=Gastromyzon katibasensis Leh [M. U. C.] & Chai [P. K. P.], 2003:277, Fig. 1a, b] Notes: [Sarawak Museum Journal 58 (no. 79); ref. 28608] Menyarin Camp at estuary of Menyarin stream with the Katibas River headwaters, Song, Katibas, Sarawak, Malasia. Current status: Valid as Gastromyzon katibasensis Leh & Chai, 2003. Gastromyzontidae. Distribution: Sarawak, Malaysia. Habitat: freshwater.

Species Gastromyzon lepidogaster Roberts, 1982 - Mengalong hillstream loach (author) [=Gastromyzon lepidogaster Roberts [T. R.], 1982:509, Figs. 9-10] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Mengalong River, Beaufort District, Sabah, northern Borneo. Current status: Valid as Gastromyzon lepidogaster Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon megalepis Roberts, 1982 - Baleh hillstream loach (author) [=Gastromyzon megalepis Roberts [T. R.], 1982:510, Fig. 11] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Tributary of Baleh River, between Sungai Entunau and Sungai Putai, Rajang basin, Third District, Sarawak, Borneo, East Malaysia. Current status: Valid as Gastromyzon megalepis Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon monticola (Vaillant, 1889) - Kina-Balou hillstream loach (author) [=Lepidoglanis monticola Vaillant [L. L.], 1889:82] Notes: [Proceedings / ...International Congress of Zoology v. 1 (for 1889); ref. 4483] Mount Kina-Balou, headwaters of Tampassuk River, Sabah, Borneo. Current status: Valid as Gastromyzon monticola (Vaillant, 1889). Gastromyzontidae. Distribution: Borneo. Habitat: freshwater. Species Gastromyzon ocellatus Tan & Ng, 2004 - Bau hillstream loach (author) [=Gastromyzon ocellatus Tan [H. H.] & Ng [P. K. L.], 2004:26, Figs. 1, 5] Notes: [Sarawak Museum Journal Spec. issue 6; ref. 28058] Bau, Serikin area, Sungai Petiak, 1°21.25'N, 110°06.81'E, Sarawak basin, Sarawak, Malaysia. Current status: Valid as Gastromyzon ocellatus Tan & Ng, 2004. Gastromyzontidae. Distribution: Bau Limestone area, draining into Sarawak basin, Sarawak, Malaysia. Habitat: freshwater.

Species Gastromyzon ornaticauda Tan & Martin-Smith, 1998 - Kuamut hillstream loach (author) [=Gastromyzon ornaticauda Tan [H. H.] & Martin-Smith [K. M.], 1998:367, Figs. 3-5] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23646] Unnamed stream at kilometer 113 on Main Line West logging track, 5°00'40"N, 117°31'40"E, Kuamut, Lahad Datu, Sabah, Malaysia. Current status: Valid as Gastromyzon ornaticauda Tan & Martin-Smith, 1998. Gastromyzontidae. Distribution: Malaysia. Habitat: freshwater.

Species Gastromyzon pariclavis Tan & Martin-Smith, 1998 - pariclavis hillstream loach (author) [=Gastromyzon pariclavis Tan [H. H.] & Martin-Smith [K. M.], 1998:362, Figs. 1-2] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23646] Unnamed stream at kilometer 111 on Main Line West logging track, 5°01'05"N, 117°32'40"E, Kuamut, Lahad Datu, Sabah, Borneo, East Malaysia. Current status: Valid as Gastromyzon pariclavis Tan & Martin-Smith, 1998. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon praestans Tan, 2006 - praestans hillstream loach (author) [=Gastromyzon praestans Tan [H. H.], 2006:96, Figs. 50-52] Notes: [The Borneo Suckers; ref. 28716] Mainstream of Sungai Pinoh 20-60 kilometers upstream from Nangapinoh, 0°27.5 - 41.5'S, 111°39 - 45.5'E, Kapuas basin, Kalimantan Barat, Borneo. Current status: Valid as Gastromyzon praestans Tan, 2006. Gastromyzontidae. Distribution: Kapuas River basin, Kotawaringin, Katingan and possibly Barito River basins, Borneo. Habitat: freshwater.

Species Gastromyzon psiloetron Tan, 2006 - Lalut hillstream loach (author) [=Gastromyzon psiloetron Tan [H. H.], 2006:126, Pl. 14A; figs. 71-73] Notes: [The Borneo Suckers; ref. 28716] Lalut (= Sungai) Birai next to Lalut Birai Field Sta., feeder stream to Enggeng Bio which drains into the Bahau River, 2°52.58'N, 115°49.19'E, Kayan basin, Kalimantan Timur, elevation 350 meters. Current status: Valid as Gastromyzon psiloetron Tan, 2006. Gastromyzontidae. Distribution: Upper Kayan and Mahakam River basins, Kalimantan Timur, and the upper Kapuas River basin, Kalimantan Barat. Habitat: freshwater.

Species Gastromyzon punctulatus Inger & Chin, 1961 - hillstream loach [=Gastromyzon punctulatus Inger [R. F.] & Chin [P. K.] 1961:173, Fig. 5A] Notes: [Copeia 1961 (no. 2); ref. 9356] Sungai Dapu River near mouth of Sungei Putai, 1°48'N, 113°45'E, Sarawak state, Borneo, East Malaysia. Current status: Valid as Gastromyzon punctulatus Inger & Chin, 1961. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Gastromyzon ridens Roberts, 1982 - ridens hillstream loach (author) [=Gastromyzon ridens Roberts [T. R.], 1982:515, Fig. 14] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Sungai Pinoh, 20-60 kilometers upstream from Nangapinoh, Kapuas basin, Borneo. Current status: Valid as Gastromyzon ridens Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater. Species Gastromyzon russulus Tan, 2006 - Enggeng hillstream loach (author) [=Gastromyzon russulus Tan [H. H.], 2006:163, Pl. 16B; figs. 103-105] Notes: [The Borneo Suckers; ref. 28716] Enggeng (=Sungai) Bio, drains into Bahau River, up to 6 riffles upstream of field station, 2°52.58'N, 115°49.19'E, Bahau, Kayan basin, Kalimantan Timur, elevation 350 meters. Current status: Valid as Gastromyzon russulus Tan, 2006. Gastromyzontidae. Distribution: Kayan and Mahakam River basins, Kalimantan Timur. Habitat: freshwater.

Species Gastromyzon scitulus 2006 - Serian hillstream loach (author) [=Gastromyzon scitulus Tan [H. H.] & Leh [C. U. M.], 2006:3, Figs. 1-2] Notes: [Zootaxa No. 1126; ref. 28497] Serian, Sungai Kuhas, 6.9 kilometers from Tebeu Tebakang turnoff, 5.8 kilometers inside right road, 1°09'10.0"N, 110°29"22.7"E, Sadong River basin, Sarawak, Borneo. Current status: Valid as Gastromyzon scitulus Tan & Leh, 2006. Gastromyzontidae. Distribution: Sadong River basin, Sarawak, Borneo. Habitat: freshwater.

Species Gastromyzon spectabilis Tan, 2006 - Taman hillstream loach (author) [=Gastromyzon spectabilis Tan [H. H.], 2006:161, Pl. 16A; figs. 101-102] Notes: [The Borneo Suckers; ref. 28716] Taman Reserve Sabah, Danum Valley survey, Sungai Danum camp II, Lahad Datu, Sabah, Malaysia. Current status: Valid as Gastromyzon spectabilis Tan, 2006. Gastromyzontidae. Distribution: Segama River basin, eastern Sabah, Malaysia. Habitat: freshwater.

Species Gastromyzon stellatus Tan, 2006 - stellatus hillstream loach (author) [=Gastromyzon stellatus Tan [H. H.], 2006:136, Pl. 14C; figs. 80-82] Notes: [The Borneo Suckers; ref. 28716] Sungai Petiak, 1°21.25'N, 110°06.81'E, Serikin area, Bau, Sarawak, Malaysia. Current status: Valid as Gastromyzon stellatus Tan, 2006. Gastromyzontidae. Distribution: Sarawak, Sadong and Lupar river basins of southern Sarawak. Habitat: freshwater.

Species Gastromyzon umbrus Tan, 2006 - umbrus hillstream loach (author) [=Gastromyzon umbrus Tan [H. H.], 2006:106, Figs. 59-61] Notes: [The Borneo Suckers; ref. 28716] Sungai Bantul at Bantul logging camp, draining to Sungai Tulit, 04°8'54"N, 116°48'18"E, Sungai Sebuku basin, Kalimantan Timur, Borneo. Current status: Valid as Gastromyzon umbrus Tan, 2006. Gastromyzontidae. Distribution: Kalabakan and Sebuku river basins, northeastern Borneo. Habitat: freshwater.

Species Gastromyzon venustus Tan & Sulaiman, 2006 - venustus hillstream loach (author) [=Gastromyzon venustus Tan [H. H.] & Sulaiman [Z. H.], 2006:13, Figs. 5-6] Notes: [Zootaxa No. 1117; ref. 28496] Sungai Belalong, in front and near to Kuala Belalong Field Studies Centre, 4°32.50"N, 115°09"27.6"E, Temburong River, Temburong District, Brunei Darussalam, elevation 80 meters. Current status: Valid as Gastromyzon venustus Tan & Sulaiman, 2006. Gastromyzontidae. Distribution: Temburong River, Brunei Darussalam, Borneo. Habitat: freshwater.

Species Gastromyzon viriosus Tan, 2006 - viriosus hillstream loach (author) [=Gastromyzon viriosus Tan [H. H.], 2006:165, Figs. 106-107] Notes: [The Borneo Suckers; ref. 28716] Sungai Sawi, Tatau District, Bintulu, Sarawak, Malaysia. Current status: Valid as Gastromyzon viriosus Tan, 2006. Gastromyzontidae. Distribution: Tatau River basin, central Sarawak, Malaysia. Habitat: freshwater.

Species Gastromyzon zebrinus Tan, 2006 - zebrinus hillstream loach (author) [=Gastromyzon zebrinus Tan [H. H.], 2006:139, Pl. 15A, figs. 83-84] Notes: [The Borneo Suckers; ref. 28716] Bengkayang, about 60-70 kilometers from Sarawak border, Sambas basin, Kalimantan Barat, Borneo. Current status: Valid as Gastromyzon zebrinus Tan, 2006. Gastromyzontidae. Distribution: Upper Sambas River basin near Bengkayang, Kalimantan Barat, Borneo. Habitat: freshwater.

GENUS Glaniopsis Boulenger, 1899 - hillstream loaches [=Glaniopsis Boulenger [G. A.], 1899:228] Notes: [ref. 553]. Fem. Glaniopsis hanitschi Boulenger, 1899. Type by monotypy. •Valid as Glaniopsis Boulenger, 1899 -- (Silas 1953:220 [ref. 4024], Sawada 1982:204 [ref. 14111], Roberts 1982 [ref. 6689], Doi 1997:27 [ref. 22832], Kottelat 2012:64 [ref. 32367], Kottelat 2013:194 [ref. 32989]). Current status: Valid as Glaniopsis Boulenger, 1899. Gastromyzontidae.

Species Glaniopsis denudata Roberts, 1982 - denudata hillstream loach (author) [=Glaniopsis denudata Roberts [T. R.], 1982:517, Fig. 17] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Sungai Kidikarok, northern Borneo, elevation 4500 feet Current status: Valid as Glaniopsis denudata Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Glaniopsis gossei Roberts, 1982 - Arur Dalan hillstream loach (author) [=Glaniopsis gossei Roberts [T. R.], 1982:518, Fig. 18] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Arur Dalan, headwater of Sungai Padapur, Baram basin, near Bario, Sarawak state, Borneo, East Malaysia, elevation 3500 feet. Current status: Valid as Glaniopsis gossei Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater. Species Glaniopsis hanitschi Boulenger, 1899 - Hanitsch hillstream loach (author) [=Glaniopsis hanitschi Boulenger [G. A.], 1899:228] Notes: [Annals and Magazine of Natural History (Series 7) v. 4 (no. 21) (art. 21); ref. 553] Mt. Kinabalu, Kadamaian River, Borneo, elevation 2100 feet. Current status: Valid as Glaniopsis hanitschi Boulenger, 1899. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

Species Glaniopsis multiradiata Roberts, 1982 - multiradiata hillstream loach (author) [=Glaniopsis multiradiata Roberts [T. R.], 1982:521, Figs. 15b, 20] Notes: [Proceedings of the California Academy of Sciences (Series 4) v. 42 (no. 20); ref. 6689] Arur Dalan, headwater of Sungai Padapur, Baram basin, near Bario, Sarawak state, Borneo, East Malaysia, elevation 3500 feet. Current status: Valid as Glaniopsis multiradiata Roberts, 1982. Gastromyzontidae. Distribution: Borneo. Habitat: freshwater.

GENUS Hypergastromyzon Roberts, 1989 - hillstream loaches [=Hypergastromyzon Roberts [T. R.], 1989:91] Notes: [ref. 6439]. Masc. Hypergastromyzon humilis Roberts, 1989. Type by original designation (also monotypic). Misspelled once as Hypogastromyzon in key on p. 83, elsewhere as above. •Valid as Hypergastromyzon Roberts, 1989 -- (Roberts 1991 [ref. 20081], Doi 1997:27 [ref. 22832], Tan & Sulaiman 2006:2 [ref. 28496], Tan 2006:201 [ref. 28716], Kottelat 2012:64 [ref. 32367], Kottelat 2013:194 [ref. 32989]). Current status: Valid as Hypergastromyzon Roberts, 1989. Gastromyzontidae.

Species Hypergastromyzon eubranchus Roberts, 1991 - Batang hillstream loach (author) [=Hypergastromyzon eubranchus Roberts [T. R.], 1991:334, Fig. 1] Notes: [Japanese Journal of Ichthyology v. 37 (no. 4).; ref. 20081] Batang Ai near Wong Mepal, Sarawak state, Borneo, East Malaysia. Current status: Valid as Hypergastromyzon eubranchus Roberts, 1991. Gastromyzontidae. Distribution: Lupar River basin, southern Sarawak, Malaysia. Habitat: freshwater.

Species Hypergastromyzon humilis Roberts, 1989 - Tamang hillstream loach (author) [=Hypergastromyzon humilis Roberts [T. R.], 1989:92, Fig. 72] Notes: [Memoirs of the California Academy of Sciences No. 14; ref. 6439] Sungei Tamang, small forest stream flowing into Sungai Pinoh opposite mouth of Sungei Kelawai, Kalamaantan Barat, Borneo. Current status: Valid as Hypergastromyzon humilis Roberts, 1989. Gastromyzontidae. Distribution: Kapus River basin, Kalimantan Barat, Borneo. Habitat: freshwater.

GENUS Katibasia Kottelat, 2004 - hillstream loaches [=Katibasia Kottelat [M.], 2004:302] Notes: [ref. 27994]. Fem. Katibasia insidiosa Kottelat, 2004. Type by original designation (also monotypic). •Valid as Katabasia Kottelat, 2004 -- (Kottelat 2012:64 [ref. 32367], Kottelat 2013:194 [ref. 32989]). Current status: Valid as Katibasia Kottelat, 2004. Gastromyzontidae.

Species Katibasia insidiosa Kottelat, 2004 - Sarawak hillstream loach (author) [=Katibasia insidiosa Kottelat [M.], 2004:303, Figs. 2-3] Notes: [Ichthyological Exploration of Freshwaters v. 15 (no. 4); ref. 27994] Rajang drainage, Ulu Katibas, Sungai Melinau, Song District, Sarawak. Current status: Valid as Katibasia insidiosa Kottelat, 2004. Gastromyzontidae. Distribution: Headwaters of Rajang River, Sarawak, Borneo. Habitat: freshwater.

GENUS Fang, 1935 - hillstream loaches [=Liniparhomaloptera Fang [P.-W.], 1935:93] Notes: [ref. 1300]. Fem. Parhomaloptera disparis Lin, 1934. Type by original designation (also monotypic). Misspelled Limparhomaloptera in Zoological Record for 1935. •Valid as Liniparhomaloptera Fang, 1935 -- (Silas 1953:224 [ref. 4024], Chen 1980:96 [ref. 6901], Sawada 1982:205 [ref. 14111], Zheng in Pan et al. 1991:263 [ref. 23876], Tang & Chen 2000:5 [ref. 25445], Chen & Tang in Yue et al. 2000:446 [ref. 25272], Kottelat 2012:65 [ref. 32367], Kottelat 2013:194 [ref. 32989], Zhang et al. 2016:159 [ref. 34477], Wu et al. 2016:275 [ref. 34909]). Current status: Valid as Liniparhomaloptera Fang, 1935. Gastromyzontidae.

Species Liniparhomaloptera disparis (Lin, 1934) - disparis hillstream loach (author) [=Parhomaloptera disparis Lin [S.-Y.], 1934:225, Figs. 1-4] Notes: [Lingnan Science Journal, Canton v. 13 (no. 2); ref. 12420] Loh-Fau Shan, Kwangtung, China. Current status: Valid as Liniparhomaloptera disparis (Lin 1934). Gastromyzontidae. Distribution: Zhujiang River, China. Habitat: freshwater.

Species Liniparhomaloptera macrostoma Wu et al., 2016 - Huoyan hillstream loach (author) [=Liniparhomaloptera macrostoma Wu [T.-J.], Xiu [L.-H.] & Yang [J.], 2016:276, Figs. 1, 2d, 3] Notes: [Ichthyological Exploration of Freshwaters v. 27 (no. 3) for Nov.; ref. 34909] Stream in Huoyan village, Longshan County, Hunnan, China, 29°12'20"N, 109°18'37"E, elevation 427 meters. Current status: Valid as Liniparhomaloptera macrostoma Wu, Xiu & Yang, 2016. Gastromyzontidae. Distribution: Hunnan Province, China. Habitat: freshwater.

Species Liniparhomaloptera obtusirostris Zheng & Chen, 1980 - Giangdong hillstream loach (author) [=Liniparhomaloptera obtusirostris Zheng [C.-Y.] & Chen [Y.-Y.], 1980:92 [100], Fig. 3] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] A mountain stream of West River, Xinyi Xian, Giangdong, China. Current status: Valid as Liniparhomaloptera obtusirostris Zheng & Chen, 1980. Gastromyzontidae. Distribution: Tributary of Zhujiang River, China. Habitat: freshwater. Species Liniparhomaloptera qiongzhongensis Zheng & Chen, 1980 - Wanquan hillstream loach (author) [=Liniparhomaloptera disparis qiongzhongensis Zheng [C.-Y.] & Chen [Y.-Y.], 1980:91 [99], Fig. 2] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] Wanquan River, Qiongzhong Xian, Hainan Island, China. Current status: Valid as Liniparhomaloptera qiongzhongensis Zheng & Chen, 1980. Gastromyzontidae. Distribution: Hainan Island, China. Habitat: freshwater.

GENUS Popta, 1905 - hillstream loaches [=Neogastromyzon Popta [C. M. L.], 1905:180] Notes: [ref. 3549]. Masc. Neogastromyzon nieuwenhuisii Popta, 1905. Type by monotypy. •Valid as Neogastromyzon Popta, 1905 -- (Silas 1953:240 [ref. 4024], Sawada 1982:206 [ref. 14111], Roberts 1982:497 [ref. 6689], Roberts 1989:93 [ref. 6439], Doi 1997:27 [ref. 22832], Tan & Sulaiman 2006:2 [ref. 28496], Tan 2006:181 [ref. 28716], Kottelat 2012:65 [ref. 32367], Kottelat 2013:194 [ref. 32989]). Current status: Valid as Neogastromyzon Popta, 1905. Gastromyzontidae.

Species Neogastromyzon brunei Tan, 2006 - Brune's hillstream loach (author) [=Neogastromyzon brunei Tan [H. H.], 2006:194, Pl. 18C; figs. 126-127] Notes: [The Borneo Suckers; ref. 28716] Sungai Enkabang, about 15 min. upstream of Kuala Belalong Field Studies Centre, 4°32'13.5"N, 115°09'35.0"E, Belalong basin, Temburong District, Brunei Darusalam. Current status: Valid as Neogastromyzon brunei Tan, 2006. Gastromyzontidae. Distribution: Temburong River basin, Brunei Darusalam. Habitat: freshwater.

Species Neogastromyzon chini Tan, 2006 - Chin hillstream loach (author) [=Neogastromyzon chini Tan [H. H.], 2006:189, Pl. 18A; figs. 121-123] Notes: [The Borneo Suckers; ref. 28716] Tributary Baleh river, between Sungai Entunau and Sungai Putai, Third Division, Sarawak, Malaysia. Current status: Valid as Neogastromyzon chini Tan, 2006. Gastromyzontidae. Distribution: Hill streams in the Rejang, Lupar and Sadong river basins, Sarawak, Malaysia. Habitat: freshwater.

Species Neogastromyzon crassiobex Tan, 2006 - crassiobex hillstream loach (author) [=Neogastromyzon crassiobex Tan [H. H.], 2006:187, Pl. 17C; figs. 119-120] Notes: [The Borneo Suckers; ref. 28716] Unnamed hill stream, 5°00'20"N, 117°30'10"E, Kuamut basin, Lahad Datu, Sabah, Malaysia. Current status: Valid as Neogastromyzon crassiobex Tan, 2006. Gastromyzontidae. Distribution: Kuamut drainage of the Kinabatangan River basin, eastern Sabah, and the Sebuku River basin, northern Kalimantan Timur. Habitat: freshwater.

Species Neogastromyzon kottelati Tan, 2006 - Sungai Hulu hillstream loach (author) [=Neogastromyzon kottelati Tan [H. H.], 2006:192, Figs. 124-125] Notes: [The Borneo Suckers; ref. 28716] Sungai Hulu Leboyan at Keluwin, Danau Sentarum area, Kalimantan Barat, Borneo. Current status: Valid as Neogastromyzon kottelati Tan, 2006. Gastromyzontidae. Distribution: Stream feeding the Danau Sentarum and Sibau area, upper Kapuas River basin. Habitat: freshwater.

Species Neogastromyzon nieuwenhuisii Popta, 1905 - Howong hillstream loach (author) [=Neogastromyzon nieuwenhuisii Popta [C. M. L.], 1905:181] Notes: [Notes from the Leyden Museum v. 25 (note 15); ref. 3549] Howong River, Mahakam basin, Borneo. Current status: Valid as Neogastromyzon nieuwenhuisii Popta, 1905. Gastromyzontidae. Distribution: Upper Mahakam and Kayan river basins, Kalimantan Timur, Borneo. Habitat: freshwater.

Species Neogastromyzon pauciradiatus (Inger & Chin, 1961) - pauciradiatus hillstream loach (author) [=Gastromyzon pauciradiatus Inger [R. F.] & Chin [P. K.], 1961:174] Notes: [Copeia 1961 (no. 2); ref. 9356] Tributary of Baleh River, opposite Sungai Laie, Sarawak state, Borneo, East Malaysia. Current status: Valid as Neogastromyzon pauciradiatus (Inger & Chin, 1961). Gastromyzontidae. Distribution: Beleh branch of Rejang River basin, Sarawak, Borneo. Habitat: freshwater.

GENUS Paraprotomyzon Pellegrin & Fang, 1935 - hillstream loaches [=Paraprotomyzon Pellegrin [J.] & Fang [P.-W.], 1935:99] Notes: [ref. 3416]. Masc. Paraprotomyzon multifasciatus Pellegrin & Fang, 1935. Type by original designation (also monotypic). •Valid as Paraprotomyzon Pellegrin & Fang, 1935 -- (Silas 1953:230 [ref. 4024], Chen 1980:111 [ref. 6901], Sawada 1982:205 [ref. 14111], Tang 1997:108 [ref. 23059], Tang & Chen 2000:7 [ref. 25445], Chen & Tang in Yue et al. 2000:498 [ref. 25272], Lu et al. 2005:203 [ref. 28156], Kottelat 2012:66 [ref. 32367], Zhang et al. 2016:160 [ref. 34477]). Current status: Valid as Paraprotomyzon Pellegrin & Fang, 1935. Gastromyzontidae.

Species Paraprotomyzon bamaensis Tang, 1997 - Bama hillstream loach (author) [=Paraprotomyzon bamaensis Tang [W.-Q.], 1997:108 [English p. 110], Fig. 1] Notes: [Acta Zootaxonomica Sinica v. 22 (no. 1); ref. 23059] Hongshuihe River system, Bama County, Guangxi, China. Current status: Valid as Paraprotomyzon bamaensis Tang, 1997. Gastromyzontidae. Distribution: Nanpanjiang River of Zhujiang River, China. Habitat: freshwater.

Species Paraprotomyzon lungkowensis Xie et al., 1984 - Lungkow hillstream loach (author) [=Paraprotomyzon lungkowensis Xie [C.-X.], Yang [G.-R.] & Gong [L.-X.], 1984:62, Figs. 1-2] Notes: [Journal of Huazhong Agricultural College v. 3 (no. 1); ref. 23761] Lungkow stream, Mount Shengnongjia, [Xiangxihe of upper reach of Chang Jiang [Yangtze River]], Hubei Province, China. Current status: Valid as Paraprotomyzon lungkowensis Xie, Yang & Gong, 1984. Gastromyzontidae. Distribution: China. Habitat: freshwater.

Species Paraprotomyzon multifasciatus Pellegrin & Fang, 1935 - Kwai-chow hillstream loach (author) [=Paraprotomyzon multifasciatus Pellegrin [J.] & Fang [P.-W.], 1935:103, Figs. 1-2] Notes: [Sinensia v. 6 (no. 2); ref. 3416] Kwai-chow, E. Szechuan, China. Current status: Valid as Paraprotomyzon multifasciatus Pellegrin & Fang, 1935. Gastromyzontidae. Distribution: Upper reaches of Changjiang River, Hongshuhe River of Zhujiang, China. Habitat: freshwater.

Species Paraprotomyzon niulanjiangensis Lu et al., 2005 - Niulanjiang hillstream loach (author) [=Paraprotomyzon niulanjiangensis Lu [Y.-F.], Lu [Z.-M.] & Mao [W.-N.], 2005:202, Fig. 1] Notes: [Acta Zootaxonomica Sinica v. 30 (no. 1); ref. 28156] Niulanjiang, 25°59'N, 103°36'E, Zhanyi County, Yunnan Province, China. Current status: Valid as Paraprotomyzon niulanjiangensis Lu, Lu & Mao, 2005. Gastromyzontidae. Distribution: Yunnan Province, China. Habitat: freshwater.

GENUS Parhomaloptera Vaillant, 1902 - hillstream loaches [=Parhomaloptera Vaillant [L. L.], 1902:129] Notes: [ref. 4490]. Fem. Parhomaloptera obscura Vaillant, 1902. Type by monotypy. •Valid as Parhomaloptera Vaillant, 1902 -- (Silas 1953:225 [ref. 4024], Doi 1997:27 [ref. 22832], Kottelat 2012:67 [ref. 32367], Kottelat 2013:195 [ref. 32989]). Current status: Valid as Parhomaloptera Vaillant, 1902. Gastromyzontidae.

Species Parhomaloptera microstoma (Boulenger, 1899) - Akar hillstream loach (author) [=Homaloptera microstoma Boulenger [G. A.], 1899:228, Parhomaloptera obscura Vaillant [L. L.], 1902:130, Figs. 36-38] Notes: [Annals and Magazine of Natural History (Series 7) v. 4 (no. 21) (art. 21); ref. 553] Akar River, Sarawak state, Borneo, East Malaysia. Current status: Valid as Parhomaloptera microstoma (Boulenger, 1899). Gastromyzontidae. Distribution: Malaysia. Habitat: freshwater. (obscura) [Notes from the Leyden Museum v. 24 (note 1); ref. 4490] Kalimantan Timur [Bluu River, 0°42'Nm, 114°24'E], Borneo, Indonesia. Current status: Synonym of Parhomaloptera microstoma (Boulenger, 1899). Gastromyzontidae. Habitat: freshwater. GENUS Plesiomyzon Zheng & Chen, 1980 - hillstream loaches [=Plesiomyzon Zheng [C.-Y.] & Chen [Y.-Y.], 1980:90 [99]] Notes: [ref. 4838]. Masc. Plesiomyzon baotingensis Zheng & Chen, 1980. Type by original designation (also monotypic). English description on p. 99. •Valid as Plesiomyzon Zheng & Chen, 1980 -- (Chen 1980:96 [ref. 6901], Zheng in Pan et al. 1991:261 [ref. 23876], Tang & Chen 2000:4 [ref. 25445], Chen & Tang in Yue et al. 2000:444 [ref. 25272], Kottelat 2012:67 [ref. 32367], Kottelat 2013:195 [ref. 32989], Zhang et al. 2016:160 [ref. 34477]). Current status: Valid as Plesiomyzon Zheng & Chen, 1980. Gastromyzontidae.

Species Plesiomyzon baotingensis Zheng & Chen, 1980 - Baoting hillstream loach (author) [=Plesiomyzon baotingensis Zheng [C.-Y.] & Chen [Y.-Y.], 1980:90 [99], Fig. 1] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] Boating Xian, Hainan Island, China. Current status: Valid as Plesiomyzon baotingensis Zheng & Chen, 1980. Gastromyzontidae. Distribution: Lingshuihe [Lingshui] River, Hainan Province, China. Habitat: freshwater.

GENUS Protomyzon Hora, 1932 - hillstream loaches [=Protomyzon Hora [S. L.], 1932:306, Progastromyzon Hora [S. L.] & Jayaram [K. C.], 1952:191] Notes: [ref. 2208]. Masc. Homaloptera whiteheadi Vaillant, 1894. Type by original designation (also monotypic). See Das 2003:361 [ref. 27706] dated to 1933. •Valid as Protomyzon Hora, 1932 -- (Silas 1953:237 [ref. 4024], Chen 1980:105 [ref. 6901], Sawada 1982:206 [ref. 14111], Doi 1997:27 [ref. 22832], Tang & Chen 2000:6 [ref. 25445], Chen & Tang in Yue et al. 2000:477 [ref. 25272], Kottelat 2004:301 [ref. 27994], Kottelat 2013:195 [ref. 32989], Zhang et al. 2016:161 [ref. 34477]). Current status: Valid as Protomyzon Hora, 1932. Gastromyzontidae. (Progastromyzon) [ref. 2216]. Masc. Progastromyzon griswoldi Hora & Jayaram, 1952. Type by original designation (also monotypic). See Das 2003:361 [ref. 27706]. •Valid as Progastromyzon Hora & Jayaram, 1952 -- (Silas 1953:239 [ref. 4024], Sawada 1982:206 [ref. 14111]). •Synonym of Protomyzon Hora, 1932 -- (Kottelat 2004:301 [ref. 27994], Kottelat 2012:67 [ref. 32367], Kottelat 2013:195 [ref. 32989]). Current status: Synonym of Protomyzon Hora, 1932. Gastromyzontidae Species Protomyzon aphelocheilus Inger & Chin, 1962 - Tambunan hillstream loach (author) [=Protomyzon aphelocheilus Inger [R. F.] & Chin [P. K.], 1962:110, Fig. 53] Notes: [Fieldiana Zoology v. 45; ref. 12303] Sungei Kaingeran, Tambunan District, northern Borneo. Current status: Valid as Protomyzon aphelocheilus Inger & Chin, 1962. Gastromyzontidae. Distribution: Northern Borneo. Habitat: freshwater.

Species Protomyzon borneensis Hora & Jayaram, 1952 - Kina Balu hillstream loach (author) [=Protomyzon borneensis Hora [S. L.] & Jayaram [K. C.], 1952:193, Fig. 2] Notes: [Records of the Indian Museum (Calcutta) v. 49 (pt 2); ref. 2216] Kina Balu Moutain, British North Borneo. Current status: Valid as Protomyzon borneensis Hora & Jayaram, 1952. Gastromyzontidae. Distribution: Northern Borneo. Habitat: freshwater.

Species Protomyzon griswoldi (Hora & Jayaram, 1952) - Griswold hillstream loach (author) [=Progastromyzon griswoldi Hora [S. L.] & Jayaram [K. C.], 1952:192, Fig. 1] Notes: [Records of the Indian Museum (Calcutta) v. 49 (pt 2); ref. 2216] Kina Balu Mountain, Kaddamayaa River at Kiau, Sabah, Borneo. Current status: Valid as Protomyzon griswoldi (Hora & Jayaram, 1952). Gastromyzontidae. Distribution: Sabah, Borneo. Habitat: freshwater.

Species Protomyzon whiteheadi (Vaillant, 1893) - Whitehead hillstream loach (author) [=Homaloptera whiteheadi Vaillant [L. L.], 1893:92, Pl. 1 (figs. 2-2d)] Notes: [Nouvelles Archives du Muséum d'Histoire Naturelle, Paris (Série 3) v. 5; ref. 14537] Mount Kina Balu, Borneo. Current status: Valid as Protomyzon whiteheadi (Vaillant, 1893). Gastromyzontidae. Distribution: Borneo. Habitat: freshwater. GENUS Pseudogastromyzon Nichols, 1925 - hillstream loaches [=Pseudogastromyzon (subgenus of ) Nichols [J. T.], 1925:1, Labigastromyzon (subgenus of Pseudogastromyzon) Tang [W.-Q.] & Chen [Y.-Y.], 1996:234] Notes: [ref. 3177]. Masc. Hemimyzon zebroidus Nichols, 1925. Type by monotypy. •Valid as Pseudogastromyzon Nichols, 1925 -- (Silas 1953:231 [ref. 4024], Chen 1980:107 [ref. 6901], Sawada 1982:205 [ref. 14111], Zheng in Pan et al. 1991:276 [ref. 23876], Tang & Chen 1996:234 [ref. 23185], Tang & Chen 2000:6 [ref. 25445], Chen & Tang in Yue et al. 2000:480 [ref. 25272], Kottelat 2012:68 [ref. 32367], Zhang et al. 2016:161 [ref. 34477]). Current status: Valid as Pseudogastromyzon Nichols, 1925. Gastromyzontidae. (Labigastromyzon) [ref. 23185]. Crossostoma fangi Nichols, 1931. Type by original designation. •Synonym of Pseudogastromyzon Nichols, 1925, but a valid subgenus Labigastromyzon as described -- (Tang & Chen 2000:6 [ref. 25445], Chen & Tang in Yue et al. 2000:492 [ref. 25272]). •Synonym of Pseudogastromyzon Nichols, 1925 -- (Kottelat 2012:68 [ref. 32367]). Current status: Synonym of Pseudogastromyzon Nichols, 1925. Gastromyzontidae.

Species Pseudogastromyzon changtingensis Liang, 1942 - Chang ting-hsian hillstream loach (author) [=Pseudogastromyzon fasciatus changtingensis Liang [Y.-S.], 1942:1, fig., Pseudogastromyzon tungpeiensis Chen [J. T. F.] & Liang [Y.-S.], 1949:158, Fig. 1] ] Notes: [Contributions from the Research Institute of Zoology and Botany, Fukien Provincial Academy No. 1; ref. 12959] Fukien [Fujian], Chang ting-hsian, China. Current status: Valid as Pseudogastromyzon changtingensis Liang, 1942. Gastromyzontidae. Distribution: Hanjiang River, China. Habitat: freshwater. (tungpeiensis) [Quarterly Journal of the Taiwan Museum (Taipei) v. 2 (no. 4); ref. 13005] Kwangtung, China. Current status: Synonym of Pseudogastromyzon changtingensis Liang, 1942. Gastromyzontidae. Distribution: Beijiang and Xijiang rivers, China (if valid). Habitat: freshwater.

Species Pseudogastromyzon cheni Liang, 1942 - Chen's hillstream loach (author) [=Pseudogastromyzon cheni Liang [Y.-S.], 1942:4, Fig. 2] Notes: [Contributions from the Research Institute of Zoology and Botany, Fukien Provincial Academy No. 1; ref. 12959] Changting, western Fukien [Fujiun], Current status: Valid as Pseudogastromyzon cheni Liang, 1942. Gastromyzontidae. Distribution: Hanjiang River, China. Habitat: freshwater.

Species Pseudogastromyzon daon (Mai, 1978) - daon hillstream loach (author) [=Gastromyzon daon Mai [D. Y.], 1978:216, Fig. 100] Notes: [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Phong-Thô and Nâm-Na creeks, Lai-Châu, northern Vietnam. Current status: Valid as Pseudogastromyzon daon (Mai, 1978). Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater.

Species Pseudogastromyzon fangi (Nichols, 1931) - Fang's hillstream loach (author) [=Crossostoma fangi Nichols [J. T.], 1931:263, Fig.] Notes: [Lingnan Science Journal, Canton v. 10 (nos 2/3); ref. 12419] Near Canton [Guangzhou], Kwangtung [Guangdong] Province, China. Current status: Valid as Pseudogastromyzon fangi (Nichols, 1931). Gastromyzontidae. Distribution: Beijiang, Xijiang, and Xiangjiang rivers, China. Habitat: freshwater.

Species Pseudogastromyzon fasciatus (Sauvage, 1878) - Tonkin hillstream loach (author) [=Psilorhynchus fasciatus Sauvage [H.-E.], 1878:88 [3], Pseudogastromyzon fasciatus jiulongjiangensis Chen [Y.-Y.], 1980:110 (English p. 119), Fig. 5, Hemimyzon zebroidus Nichols [J. T.], 1925:1, Fig. 1] Notes: [Bulletin de la Société philomathique de Paris (7th Série) v. 2; ref. 3878] Tonkin, Vietnam, [Fukien [Fujian], Kuatun, 27°51'N, 117°48'E], elevation 1200 meters. Current status: Valid as Pseudogastromyzon fasciatus (Sauvage, 1878). Gastromyzontidae. Distribution: Fujian [Fujian], China. Habitat: freshwater. (jiulongjiangensis) [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] Jiulong River, Longyan Xian and Nanjing Xian, Fujian Province, China. Current status: Synonym of Pseudogastromyzon fasciatus (Sauvage, 1878). Gastromyzontidae. Distribution: Fujian Province, China [if valid]. Habitat: freshwater. (zebroidus) [American Museum Novitates No. 167; ref. 3177] Near Nanping, Fukien Province, China. Current status: Synonym of Pseudogastromyzon fasciatus (Sauvage, 1878). Gastromyzontidae. Habitat: freshwater.

Species Pseudogastromyzon laticeps Chen & Zheng, in Zheng & Chen, 1980 - laticeps hillstream loach (author) [=Pseudogastromyzon laticeps Chen [Y.-Y.] & Zheng [C.-Y.], in Zheng & Chen, 1980:96 [101], Fig. 7] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] A mountain stream at Lianhua Shan, Haifeng Xian, Guangdong, China. Current status: Valid as Pseudogastromyzon laticeps Chen & Zheng, 1980. Gastromyzontidae. Distribution: Guangdong Haifeng, China. Habitat: freshwater.

Species Pseudogastromyzon lianjiangensis Zheng, 1981 - Lianjiang hillstream loach (author) [=Pseudogastromyzon lianjiangensis Zheng [C.-Y.], 1981:59 [English p. 63], Fig. 2] Notes: [Journal of Jinan University (Natural Science) v. 1; ref. 22557] Mountain creek, Danan Shan, Lianjiang system, Puning Xian, Guangdong Province, China. Current status: Valid as Pseudogastromyzon lianjiangensis Zheng, 1981. Gastromyzontidae. Distribution: Liangjiang and Rongjiang rivers, China. Habitat: freshwater.

Species Pseudogastromyzon meihuashanensis Li, 1998 - Meihuashan hillstream loach (author) [=Pseudogastromyzon meihuashanensis Li [S.-Q.], 1998:260 [English p.263], Fig. 1] Notes: [Journal of Fisheries of China v. 22 (no. 3); ref. 25773] Jiulong River, Meihuashan Nature Reserve, Rjian, Fujian, China (25°25'N, 116°55'E). Current status: Valid as Pseudogastromyzon meihuashanensis Li, 1998. Gastromyzontidae. Distribution: Jiulong River, Fujian Province, China. Habitat: freshwater.

Species Pseudogastromyzon myersi Herre, 1932 - Myers' hillstream loach (author) [=Pseudogastromyzon myersi Herre [A. W. C. T.], 1932:430, Fig. 1, Pseudogastromyzon maculatum Chen [Y.-Y.] & Zheng [C.-Y.], in Zheng & Chen, 1980:95 [100], Fig. 6] Notes: [Lingnan Science Journal, Canton v. 11 (no. 3); ref. 10975] Hong Kong. Current status: Valid as Pseudogastromyzon myersi Herre, 1932. Gastromyzontidae. Distribution: Dongjiang, Rongjiang rivers, China. Habitat: freshwater. (maculatum) [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] East River, Lianping Xian and Xinfeng Xian, Guangdong, China. Current status: Synonym of Pseudogastromyzon myersi Herre, 1932. Gastromyzontidae. Habitat: freshwater.

Species Pseudogastromyzon peristictus Zheng & Li, 1986 - Fengshun Xian hillstream loach (author) [=Pseudogastromyzon peristictus Zheng [C.-Y.] & Li [J.-P.], 1986:77] Notes: [English p. 83], Fig. 1 [Journal Sci. Med. Jinan University 1986 (no. 1); ref. 17740] Fengshun Xian, Guangdong, China. Current status: Valid as Pseudogastromyzon peristictus Zheng & Li, 1986. Gastromyzontidae. Distribution: Rongjiang and Meijiang rivers, China. Habitat: freshwater.

GENUS Hora, 1932 - hillstream loaches [=Sewellia Hora [S. L.], 1932:315, Diardichthys (subgenus of Sewellia) Roberts [T. R.], 1998:275, Parasewellia Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:543] Notes: [ref. 2208]. Fem. lineolata Valenciennes, 1846. Type by original designation (also monotypic). See Das 2003:362 [ref. 27706] dated to 1933. •Valid as Sewellia Hora, 1932 -- (Silas 1953:230 [ref. 4024], Sawada 1982:205 [ref. 14111], Kottelat 1989:13 [ref. 13605], Serov 1996:273 [ref. 22874], Kottelat 1994:109 [ref. 22886], Serov 1996:199 [ref. 22874], Doi 1997:27 [ref. 22832], Roberts 1998:272 [ref. 23902], Freyhof & Serov 2000:218 [ref. 25068], Freyhof 2003:225 [ref. 27390], Kottelat 2012:69 [ref. 32367], Kottelat 2013:195 [ref. 32989], Endruweit & Nguyen 2016:297 [ref. 34912]). Current status: Valid as Sewellia Hora, 1932. Gastromyzontidae. (Diardichthys) [ref. 23902]. Masc. Sewellia diardi Roberts, 1998. Type by original designation. •Synonym of Sewellia Hora 1932 -- (Kottelat 2012:69 [ref. 32367], Kottelat 2013:195 [ref. 32989]). Current status: Synonym of Sewellia Hora, 1932. Gastromyzontidae. (Parasewellia) [ref. 29730]. Fem. Parasewellia tetralobata Nguyen & Nguyen, 2005. Type by original designation. •Synonym of Sewellia Hora, 1932 -- (Kottelat 2012:69 [ref. 32367], Kottelat 2013:195 [ref. 32989]). Current status: Synonym of Sewellia Hora, 1932. Gastromyzontidae.

Species Sewellia albisuera Freyhof, 2003 - Thu Bon hillstream loach (author) [=Sewellia albisuera Freyhof [J.], 2003:226, Figs. 1-2, Parasewellia tetralobata Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:545, Fig. 1] Notes: [Ichthyological Exploration of Freshwaters v. 14 (no. 3); ref. 27390] River Thu Bon, about 16 kilometers west of Than My, 15°40.33'N, 107°48.45'E, Quang Nam, Dang Nang Province, Vietnam. Current status: Valid as Sewellia albisuera Freyhof, 2003. Gastromyzontidae. Distribution: Catchment of Thu Bon River, Quang Nam Da Nang Province, Vietnam. Habitat: freshwater. (tetralobata) [Freshwater fishes of Vietnam v. 2; ref. 29730] Thu Bon River, Quang Nam, Vietnam. Holotype (unique): Univ. Su Pham 1, Ha Noi. Current status: Synonym of Sewellia albisuera Freyhof, 2003. Gastromyzontidae. Distribution: Thu Bon River, Quang Nam, Vietnam. Habitat: freshwater.

Species Sewellia analis Nguyen & Nguyen, in Nguyen, 2005 - Hong Van hillstream loach (author) [=Sewellia analis Nguyen [H. D.] & Nguyen [V. H.], in Nguyen [V. H.], 2005:587, Fig. 25] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Hông Vân, Tarinh, A Sap, A Luoi, Thua Thiên, Huê, Vietnam. Holotype: Univ. Su Pham, Ha Noi. Current status: Valid as Sewellia analis Nguyen & Nguyen, 2005. Gastromyzontidae. Distribution: A Luoi, Thua Thiên, Huê, Vietnam. Habitat: freshwater.

Species Sewellia breviventralis Freyhof & Serov, 2000 - butterfly loach [=Sewellia breviventralis Freyhof [J.] & Serov [D. V.], 2000:231, Figs. 9-10] Notes: [Ichthyological Exploration of Freshwaters v. 11 (no. 3); ref. 25068] River Pako, about 50 kilometers north of Kontum, Kontum Province, Vietnam, 14°39'60"N, 107°46'98"E. Current status: Valid as Sewellia breviventralis Freyhof & Serov, 2000. Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater.

Species Sewellia diardi Roberts, 1998 - diardi hillstream loach (author) [=Sewellia diardi Roberts [T. R.], 1998:281, Fig. 6] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23902] Lower Xe Nam Noi, 1.5 kilometers downstream from bridge on route 232 to Attapeu, 26 kilometers by road from Ban Nam Tang, Laos, elevation 270 meters. Current status: Valid as Sewellia diardi Roberts, 1998. Gastromyzontidae. Distribution: Laos. Habitat: freshwater.

Species Sewellia elongata Roberts, 1998 - elongata hillstream loach (author) [=Sewellia elongata Roberts [T. R.], 1998:283, Fig. 7] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23902] Bolovens Plateau, Xe Nam Noi at proposed dam site for Xe Nam Noi-Xe Pian dam, 16 kilometers southeast of Ban Nam Tang, Laos, elevation 730 meters. Current status: Valid as Sewellia elongata Roberts, 1998. Gastromyzontidae. Distribution: Laos. Habitat: freshwater.

Species Sewellia hypsicrateae Endruweit & Nguyen, 2016 - Dakrong hillstream loach (author) [=Sewellia hypsicrateae Endruweit [M.] & Nguyen [T. D. P.], 2016:299, Figs. 1-2] Notes: [Ichthyological Exploration of Freshwaters v. 27 (no. 4) for Dec.; ref. 34912] Quang Tri Province, Dakrong River basin, market of Krong Klang (Dakrong) town, Vietnam, about 16°42'N, 106°53'E. Current status: Valid as Sewellia hypsicrateae Endruweit & Nguyen, 2016. Gastromyzontidae. Distribution: Dakrong River basin, Quang Tri Province, Vietnam. Habitat: freshwater.

Species Sewellia lineolata (Valenciennes, in Cuvier & Valenciennes, 1846) - reticulated hillstream loach [=Balitora lineolata Valenciennes [A.], in Cuvier & Valenciennes, 1846:99, Sewellia songboensis Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:581, Fig. 22] Notes: [Histoire naturelle des poissons v. 18; ref. 1011] Cochinchine, Vietnam. Current status: Valid as Sewellia lineolata (Valenciennes, 1846). Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater. (songboensis) [Freshwater fishes of Vietnam v. 2; ref. 29730] A Sâp-A Luoi, Thua Thiên, Huê, Vietnam. Holotype: Univ. Su Pham, Ha Noi. Current status: Valid as Sewellia lineolata (Valenciennes, 1832). Gastromyzontidae. Distribution: A Luoi, Thua Thiên, Huê, Vietnam (if valid). Habitat: freshwater.

Species Sewellia marmorata Serov, 1996 - marmorata hillstream loach (author) [=Sewellia marmorata Serov [D. V.], 1996:273, Fig. 1] Notes: [Voprosy Ikhtiologii v. 36 (no. 2); ref. 22874] Kon-Khanym forest, Zalai-Kontum [Gia Lai-Kontum] Province, Vietnam, 13°57'N, 107°32'E, elevation 1250 meters. Current status: Valid as Sewellia marmorata Serov, 1996. Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater.

Species Sewellia medius Nguyen & Nguyen, in Nguyen, 2005 - tiger hillstream loach [=Sewellia media Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:585, Fig. 24, Sewellia brevis Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:585, caption to fig. 24] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Hông Vân, Tarinh, A Sap, A Luoi, Thua Thiên, Huê, Vietnam. Current status: Valid as Sewellia medius Nguyen & Nguyen, 2005. Gastromyzontidae. Distribution: Thua Thiên, Huê, Vietnam. Habitat: freshwater. (brevis) [Freshwater fishes of Vietnam v. 2; ref. 29730] Current status: Synonym of Sewellia medius Nguyen & Nguyen, 2005. Gastromyzontidae.

Species Sewellia monolobata (Nyguyen & Nguyen, in Nguyen, 2005) - Quang Nam hillstream loach (author) [=Parasewellia monolobata Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:546, Fig. 2, Parasewellia polylobata Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:548, Fig. 3] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Thu Bon River, Quang Nam River, Vietnam. Current status: Valid as Sewellia monolobata Nguyen & Nguyen, 2005. Gastromyzontidae. Distribution: Thu Bon River, Quang Nam, Vietnam. Habitat: freshwater. (polylobata) [Freshwater fishes of Vietnam v. 2; ref. 29730] Thu Bon River, Quang Nam Province, Vietnam. Current status: Synonym of Sewellia monolobata Nguyen & Nguyen, 2005. Gastromyzontidae. Distribution: Thu Bon river drainage, Quang Nam Province, Vietnam (if valid). Habitat: freshwater.

Species Sewellia patella Freyhof & Serov, 2000 - Gia Lai hillsteam loach (author) [=Sewellia patella Freyhof [J.] & Serov [D. V.], 2000:235, Figs. 13-14] Notes: [Ichthyological Exploration of Freshwaters v. 11 (no. 3); ref. 25068] Stream Azun, about 30 kilometers east of Plieku, 14°02'34"N, 108°21'07"E, Gia Lai Province, Vietnam. Current status: Valid as Sewellia patella Freyhof & Serov, 2000. Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater.

Species Sewellia pterolineata Roberts, 1998 - Trac Khuc hillsteam loach (author) [=Sewellia pterolineata Roberts [T. R.], 1998:277, Fig. 4] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23902] Trac Khuc [Khu] River, Nghia Bin Province [Quang Nghia Province], Vietnam. Current status: Valid as Sewellia pterolineata Roberts, 1998. Gastromyzontidae. Distribution: Vietnam. Habitat: freshwater.

Species Sewellia speciosa Roberts, 1998 - Laotian hillstream loach (author) [=Sewellia speciosa Roberts [T. R.], 1998:279, Fig. 5] Notes: [The Raffles Bulletin of Zoology v. 46 (no. 2); ref. 23902] Lower Xe Nam Noi, 1.5 kilometers downstream from bridge on route 232 to Attapeu, 26 kilometer from Ban Nam Tang, Laos, elevation 270 meters. Current status: Valid as Sewellia speciosa Roberts, 1998. Gastromyzontidae. Distribution: Laos. Habitat: freshwater.

Species Sewellia trakhucensis Nguyen & Nguyen, in Nguyen, 2005 - Son Ha hillsteam loach (author) [=Sewellia trakhucensis Nguyen [H. D.] & Nguyen [V. H.], in Nguyen, 2005:583, Fig. 23] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Trà Khúc River, Son Hà, Quang Ngai Province, Vietnam. Current status: Valid as Sewellia trakhucensis Nguyen & Nguyen, 2005. Gastromyzontidae. Distribution: Trà Khúc River, Son Hà, Quang Ngai Province, Vietnam. Habitat: freshwater.

GENUS Hora, 1932 - hillstream loaches [=Vanmanenia Hora [S. L.], 1932:309, Homalosoma Boulenger [G. A.], 1901:270, Praeformosania Fang [P.-W.], 1935:71] Notes: [ref. 2208]. Fem. Homalosoma (sic) stenosoma Boulenger, 1901. Type by original designation (also monotypic). Second species referred to genus with question. Boulenger's Homalosoma apparently a mistake for Homaloptera; also preoccupied. See Das 2003:368 [ref. 27706] with date as 1933. •Synonym of Homalosoma Boulenger, 1901 -- (Kottelat 2001:45 [ref. 25482]). •Valid as Vanmanenia Hora, 1932 – (Silas 1953:225 [ref. 4024], Chen 1980:97 [ref. 6901], Sawada 1982:205 [ref. 14111], Zheng in Pan et al. 1991:267 [ref. 23876], Chen in Chen 1998:261 [ref. 23556], Tang & Chen 2000:5 [ref. 25445], Chen & Tang in Yue et al. 2000:451 [ref. 25272], Kottelat 2012:71 [ref. 32367], Kottelat 2013:196 [ref. 32989], Yi et al. 2014:85 [ref. 33322], Zhang et al. 2016:162 [ref. 34477]). Current status: Valid as Vanmanenia Hora, 1932. Gastromyzontidae. (Homalosoma) [ref. 5127]. Neut. Homalosoma stenosoma Boulenger, 1901. Type by monotypy. Not labeled a new genus in the original description or in list of new genera in volume; but it was spelled consistently as Homalosoma in the original description, on plate, etc.; see Hora 1932:309 [ref. 2208]. It is a misspelling of Homaloptera which Boulenger confused with the snake genus Homalosoma. •Valid as Homalosoma Boulenger, 1901 -- (Kottelat 2001:45 [ref. 25482]). •Synonym of Vanmanenia Hora, 1932 -- (Chen 1980:97 [ref. 6901], Zheng in Pan et al. 1991:267 [ref. 23876], Kottelat 2012:71 [ref. 32367], Kottelat 2013:196 [ref. 32989]). Current status: Synonym of Vanmanenia Hora, 1932. Gastromyzontidae. (Praeformosania) [ref. 1300]. Fem. Praeformosania pingchowensis Fang, 1935. Type by original designation. Type species misspelled pinchowensis on p. 71. •Valid as Praeformosania Fang (Silas 1953:227 [ref. 4024], Sawada 1982:205 [ref. 14111]). •Synonym of Vanmanenia Hora, 1932 -- (Chen 1980:97 [ref. 6901], Zheng in Pan et al. 1991:267 [ref. 23876], Chen & Tang in Yue et al. 2000:451 [ref. 25272], Kottelat 2012:71 [ref. 32367], Kottelat 2013:196 [ref. 32989], Li et al. 2014:92 [ref. 33322], Zhang et al. 2016:162 [ref. 34477]). Current status: Synonym of Vanmanenia Hora, 1932. Gastromyzontidae.

Species Vanmanenia caldwelli (Nichols, 1925) - Caldwell's hillstream loach (author) [=Homaloptera caldwelli Nichols [J. T.], 1925:1] Notes: [American Museum Novitates No. 172; ref. 15552] Near Nanping, Fukien Province, China. Current status: Valid as Vanmanenia caldwelli (Nichols, 1925). Gastromyzontidae. Distribution: Upper and middle reaches of Minijang River, China. Habitat: freshwater.

Species Vanmanenia caobangensis Nguyen, 2005 - Cao Bang hillstream loach (author) [=Vanmanenia caobangensis Nguyen [V. H.], 2005:571, Fig. 16] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Bang River, Cao Bang, Cao Bang Province, Vietnam. Current status: Valid as Vanmanenia caobangensis Nguyen, 2005. Gastromyzontidae. Distribution: Bang river system, Cao Bang Province, Vietnam. Habitat: freshwater.

Species Vanmanenia crassicauda Kottelat, 2000 - Houay Keap hillstream loach (author) [=Vanmanenia crassicauda Kottelat [M.], 2000:75, Fig. 66, Vanmanenia microlepis Nguyen [V. H.], 2005:578, Fig. 20] Notes: [Journal of South Asian Natural History v. 5 (no. 1); ref. 25040] Houay Keap, waterfall adjacent to road on creek entering Nam Xam at kilometer 5 on road from Xam Tai to Ban Houatangoua, 20°01'00"N, 104°35'44"E, Houaphan Province, Laos. Current status: Valid as Vanmanenia crassicauda Kottelat, 2000. Gastromyzontidae. Distribution: Laos. Habitat: freshwater. (microlepis) [Freshwater fishes of Vietnam v. 2; ref. 29730] Nâm So, Phong Thô, Lai Châu Province, [Sond da drainage], Vietnam. Current status: Synonym of Vanmanenia crassicauda Kottelat, 2000. Gastromyzontidae. Distribution: Lai Châu Province, Vietnam. Habitat: freshwater.

Species Vanmanenia gymnetrus Chen, 1980 - Jiulong hillstream loach (author) [=Vanmanenia gymnetrus Chen [Y.-Y.], 1980:100 (English p. 118), Fig. 1] Notes: [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] Jiulong River, Longyan Xian, Fujian Province, China. Current status: Valid as Vanmanenia gymnetrus Chen, 1980. Gastromyzontidae. Distribution: Dongjiang, Hanjiang, and Jiulongjiang rivers, China. Habitat: freshwater.

Species Vanmanenia hainanensis Chen & Zheng, in Zheng & Chen, 1980 - Hainan hillstream loach (author) [=Vanmanenia hainanensis Chen [Y.-Y.] & Zheng [C.-Y.], in Zheng & Chen, 1980:93 [100], Fig. 4] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] A mountain stream of Chang Jiang, Qiongzhou Xian, Hainan Island, China. Current status: Valid as Vanmanenia hainanensis Chen & Zheng, 1980. Gastromyzontidae. Distribution: Chaghua River, Hainan Island, China. Habitat: freshwater.

Species Vanmanenia homalocephala Zhang & Zhao, 2000 - Luopqing hillstream loach (author) [=Vanmanenia homalocephala Zhang [C.-G.] & Zhao [Y.-H.], 2000:460, Figs. 1-2] Notes: [Acta Zootaxonomica Sinica v. 25 (no. 4); ref. 25108] Rivulet of Luopqing Jiang basin, a tributary of Liu Jiang basin, Pearl River system, Baishou, Yongfu County, Guangxi, China, 26°35'N, 118°15'E. Current status: Valid as Vanmanenia homalocephala Zhang & Zhao, 2000. Gastromyzontidae. Distribution: China. Habitat: freshwater.

Species Vanmanenia lineata (Fang, 1935) - lineata hillstream loach (author) [=Praeformosania lineata Fang [P.-W.], 1935:78, Fig. 11, Formosania yaoshanensis Wu [H.-W.], 1939:128, Pl. 3 (fig. 7)] Notes: [Sinensia v. 6 (no. 1); ref. 1300] Kwang-Lau, Ling-Yuen-hsien, northwestern Kwangsi, China. Current status: Valid as Vanmanenia lineata (Fang, 1935). Gastromyzontidae. Distribution: Xijang River, China. Habitat: freshwater. (yaoshanensis) [Sinensia v. 10 (nos 1-6); ref. 4805] Yao-shan, Li Kiang, southern China. Current status: Synonym of Vanmanenia lineata (Fang, 1935). Gastromyzontidae. Habitat: freshwater.

Species Vanmanenia maculata Yi et al., 2014 - Majia-He hillstream loach [=Vanmanenia maculata Yi [W.-J.], Zhang [E] & Shen [J.-Z.], 2014:86, Figs. 2-3B] Notes: [Zootaxa 3802 (no. 1); ref. 33322] Majia-He, a tributary flowing into Qing-Jiang of Chang-Jiang basin, at Enshi County, Hubei Province, south China. Current status: Valid as Vanmanenia maculata Yi, Zhang & Shen, 2014. Gastromyzontidae. Distribution: Hubei Province, southern China. Habitat: freshwater.

Species Vanmanenia monofasciodorsala Nguyen, 2005 - Nam Rom hillstream loach [=Vanmanenia monofasciodorsala Nguyen [V. H.], 2005:574, Fig. 18] Notes: [Freshwater fishes of Vietnam v. 2; ref. 29730] Nâm Rôm River, Dien Bien, Vietnam. Current status: Valid as Vanmanenia monofasciodorsala Nguyen, 2005. Gastromyzontidae. Distribution: Mê Kông River system, Dien Bien, Vietnam. Habitat: freshwater.

Species Vanmanenia pingchowensis (Fang, 1935) - Pingchow hillstream loach (author) [=Praeformosania pingchowensis Fang [P.-W.], 1935:72, Figs. 3c, 9, Praeformosania intermedia Fang [P.-W.], 1935:75, Fig. 10] Notes: [Sinensia v. 6 (no. 1); ref. 1300] Mountain streams, Ping-chow-hsien, southern Kweichow, China. Current status: Valid as Vanmanenia pingchowensis (Fang, 1935). Gastromyzontidae. Distribution: Zhujiang and Qingjiang rivers, Dongting and Boyanghu Lakes, China. Habitat: freshwater. (intermedia) [Sinensia v. 6 (no. 1); ref. 1300] Mountain streams running into Tung-ting Lake, Tu-Yuen-Hsien, southern Kweichow, China. Current status: Synonym of Vanmanenia pingchowensis (Fang, 1935). Gastromyzontidae. Habitat: freshwater.

Species Vanmanenia polylepis Pan et al., 1983 - Guangdong hillstream loach (author) [=Vanmanenia polylepis Pan [J.], Liu [C.] & Zhang [W.], 1983:107 [English p. 108], Fig. 2] Notes: [Journal of the Hua Nan Teacher's Univ., Nat. Sci. Ed. 1983 (no. 2); ref. 21354] Beijiang River, Guangdong, China. Current status: Valid as Vanmanenia polylepis Pan, Liu & Zhang, 1983. Gastromyzontidae. Distribution: Guangdong, China. Habitat: freshwater.

Species Vanmanenia serrilineata Kottelat, 2000 - serrilineata hillstream loach (author) [=Vanmanenia serrilineata Kottelat [M.], 2000:76, Fig. 68, Vanmanenia trifasciodorsalata Nguyen [V. H.], 2005:576, Fig. 19] Notes: [Journal of South Asian Natural History v. 5 (no. 1); ref. 25040] Nam tha at Ban Finho, about 14 kilometers north of Luang Nam Tha, 21°04'44"N, 101°24'09"E, Louangnamtha Province, Laos. Current status: Valid as Vanmanenia serrilineata Kottelat, 2000. Gastromyzontidae. Distribution: Laos. Habitat: freshwater. (trifasciodorsalata) [Freshwater fishes of Vietnam v. 2; ref. 29730] Nâm Rôm River, Dien Bien, Vietnam. Current status: Synonym of Vanmanenia serrilineata Nguyen, 2005. Gastromyzontidae. Distribution: Nâm Rôm and Nâm Núa rivers, Mê Kông River system, Dien Bien, Vietnam (if valid). Habitat: freshwater.

Species Vanmanenia stenosoma (Boulenger, 1901) - Ningpo hillstream loach (author) [=Homalosoma stenosoma Boulenger [G. A.], 1901:270, Pl. 23 (fig. 3), Homaloptera (Homalosoma) caldwelli chekianensis Tchang [T.-L.], 1932:83, Fig.] Notes: [Proceedings of the Zoological Society of London 1901, v. 1 (pt 2); ref. 5127] Ningpo, China. Current status: Valid as Vanmanenia stenosoma (Boulenger, 1901). Gastromyzontidae. Distribution: River system in Zhejiang and Boyang Lake, China. Habitat: freshwater. (chekianensis) [Bulletin of the Fan Memorial Institute of Biology, Peiping (Zooogical Series) v. 3 (no. 6); ref. 16400] Chekiang, China. Current status: Synonym of Vanmanenia stenosoma (Boulenger, 1901). Balitoridae. Habitat: freshwater.

Species Vanmanenia striata Chen, 1980 - Yuanjiang hillstream loach (author) [=Vanmanenia striata Chen [Y.-Y.], 1980:101 (English p. 118), Fig. 2] Notes: [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] Yuanjiang (Red River) River, Xiaguan Shi, Yunnan Province, China. Current status: Valid as Vanmanenia striata Chen, 1980. Gastromyzontidae. Distribution: China. Habitat: freshwater.

Species Vanmanenia tetraloba (Mai, 1978) - Lanchangjiang hillstream loach (author) [=Homaloptera tetraloba Mai [D. Y.], 1978:210, Fig. 97] Notes: [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Fast-running creeks in northern Vietnam. Current status: Valid as Vanmanenia tetraloba (Mai, 1978). Gastromyzontidae. Distribution: Lanchangjiang River, China. Habitat: freshwater.

Species Vanmanenia xinyiensis Zheng & Chen, 1980 - Xinyi hillstream loach (author) [=Vanmanenia xinyiensis Zheng [C.-Y.] & Chen [Y.-Y.], 1980:94 [100], Fig. 5] Notes: [Acta Zootaxonomica Sinica v. 5 (no. 1); ref. 4838] A mountain stream of West River, Xinyi Xian, Guangdong, China. Current status: Valid as Vanmanenia xinyiensis Zheng & Chen, 1980. Gastromyzontidae. Distribution: Zhujiang River branches and Xijiang River, China. Habitat: freshwater.

GENUS Yaoshania Yang et al., 2012 - panda loaches [=Yaoshania Yang [J.], Kottelat [M.], Yang [J.-X.] & Chen [X.-Y.], 2012:174] Notes: [ref. 32329]. Fem. Protomyzon pachychilus Chen, 1980. Type by original designation. •Valid as Yaoshania Yang, Kottelat, Yang & Chen, 2012. Current status: Valid as Yaoshania Yang, Kottelat, Yang & Chen, 2012. Gastromyzontidae.

Species Yaoshania pachychilus (Chen, 1980) - panda loach [=Protomyzon pachychilus Chen [Y.-Y.], 1980:106 (English p. 119), Fig. 3] Notes: [Acta Hydrobiologica Sinica v. 7 (no. 1); ref. 6901] Mountain stream of West River, Guangxi Province, China. Current status: Valid as Yaoshania pachychilus (Chen, 1980). Gastromyzontidae. Distribution: Brooks flowing into Xijiang River, Guangxi Prov, China. Habitat: freshwater. ************************************************************************************** Unavailable names, uncertain taxa

Gastromyzon buas Mai [D. Y.] 1978:215, Fig. 99 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Buo River, northern Vietnam. Syntypes: DVZUT. •Status uncertain -- (Kottelat 2001:47 [ref. 25482], Kottelat 2012:57 [ref. 32367]). •Status uncertain as Beaufortia buas (Mai 1978) -- (Kottelat 2013:191 [ref. 32989]). Current status: Uncertain as Beaufortia buas (Mai 1978). Gastromyzontidae. Habitat: freshwater. Beaufortia triocellata Nguyen [V. H.] 2005:590, Fig. 27 [Freshwater fishes of Vietnam v. 2; ref. 29730] Cao Bang, Vietnam. Holotype: NCNTTS I, Bac Ninh (lost). Paratypes: (6) lost. Types at RIA 1 [= NCNTTSI] are lost according to Endruweit 2014:144 [ref. 33205]. •Questionably as synonym of Beaufortia zebroida (Fang 1930) -- (Kottelat 2012:59 [ref. 32367]). Current status: Uncertain as Beaufortia zebroida (Fang 1930). Gastromyzontidae. Distribution: Bang river system, Cao Bang, Vietnam (if valid). Habitat: freshwater.

Gastromyzon elongatus Mai [D. Y.] 1978:213, Fig. 98 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Northern Vietnam. Holotype (unique): DVZUT. •Status uncertain -- (Kottelat 2001:47 [ref. 25482], Kottelat 2012:57 [ref. 32367]). Current status: Uncertain as Pseudogastromyzon elongatus (Mai 1978). Gastromyzontidae. Habitat: freshwater.

Gastromyzon loos Mai [D. Y.] 1978:217, Fig. 101 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Song La basin, northern Vietnam. Syntypes: DVZUT. •Status uncertain -- (Kottelat 2001:47 [ref. 25482], Kottelat 2012:58 [ref. 32367], Kottelat 2013:191 [ref. 32989]). Current status: Uncertain as Pseudogastromyzon loos (Mai 1978). Gastromyzontidae. Habitat: freshwater.

Homaloptera monoloba Mai [D. Y.] 1978:207, Fig. 94 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Ky-Phú Creek, northern Vietnam. Syntypes: DVZUT. •Status uncertain -- (Kottelat 2001:46 [ref. 25482], Kottelat 2012:65 [ref. 32367], Kottelat 2013:194 [ref. 32989], Li et al. 2014:95 [ref. 33322]). Current status: Uncertain as Liniparhomaloptera monoloba (Mai 1978). Gastromyzontidae. Habitat: freshwater.

Homaloptera multiloba Mai [D. Y.] 1978:208, Fig. 95 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Northern Vietnam. Syntypes: DVZUT. •Status uncertain -- (Kottelat 2001:45 [ref. 25482]). •Species inquirenda et incertae sedis -- (Kottelat 2012:71 [ref. 32367], Kottelat 2013:196 [ref. 32989], Yi at al. 2014:95 [ref. 33322]). Current status: Uncertain as Vanmanenia multiloba (Mai 1978). Gastromyzontidae. Distribution: Vietnam (if valid). Habitat: freshwater.

Vanmanenia nahangensis Nguyen [V. H.] 2005:572, Fig. 17 [Freshwater fishes of Vietnam v. 2; ref. 29730] Gâm River, Nà Hang, Tuyên Quang Province, Vietnam. Holotype: NCNTTSI (lost). Species spelled nahangenis in caption to figure 17; regarded [W.N.E.] as a lapsus [misspelling]; spelled nahangensis in the main heading and that spelling is appropriate for the appropriate suffix. Types at RIA 1 [= NCNTTSI] are lost according to Endruweit 2014:144 [ref. 33205]. •Status uncertain as Vanmanenia nahangensis Nguyen 2005 -- (Kottelat 2013:197 [ref. 32989], Yi et al. 2014:96 [ref. 33322]). Current status: Uncertain as Vanmanenia nahangensis Nguyen 2005. Gastromyzontidae. Distribution: Tuyên Quang Province, Vietnam. Habitat: freshwater.

Homaloptera ventrosquamata Mai [D. Y.] 1978:209, Fig. 96 [Identification of the fresh-water fishes of North Viet Nam v. 1; ref. 13511] Northern Vietnam [Bac Giang and Bac Ninh provinces]. Syntypes: DVZUT. •Status uncertain -- (Kottelat 2001:46 [ref. 25482]). •Species inquirenda et incertae sedis -- (Kottelat 2012:71 [ref. 32367], Kottelat 2013:197 [ref. 32989], Yi et al. 2014:96 [ref. 33322]). Current status: Uncertain as Vanmanenia ventrosquamata (Mai 1978). Gastromyzontidae. Habitat: freshwater.