Please look in Eschmeyer's Catalog of Fishes for authorships of sections, Families of Fishes (all), and related information.

Species in the genus Pseudomystus: [ 24 ] records

albicollaris, Leiocassis Fowler [H. W.] 1934:337, Fig. 2 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 86; ref. 1418] Bangkok, Thailand. Holotype (unique): ANSP 60178. Type catalog: Böhlke 1984:25 [ref. 13621], Ferraris 2007:104 [ref. 29155]. •Questionably a synonym of Leiocasis siamensis Regan 1913 -- (Burgess 1989:70 [ref. 12860]). •Valid as Pseudomystus albivollaris (Fowler 1934), but possibly a synonym of Pseudomystus siamensis (Regan 1913) -- (Ng & Rachmatika 1999:176, 178 [ref. 23964]). •Synonym of Pseudomystus siamensis (Regan 1913) -- (Kottelat 2001:125 [ref. 25780], Ng & Lim 2005:16 [ref. 28081], Ferraris 2007:104 [ref. 29155], Kottelat 2013:265 [ref. 32989]). Current status: Synonym of Pseudomystus siamensis (Regan 1913). Bagridae. Habitat: freshwater.

bicolor, Leiocassis Fowler [H. W.] 1934:95, Fig. 43 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 86; ref. 1417] Chieng Mai [or Mae Nam Ping], northern Thailand. Holotype: ANSP 59284. Paratypes: ANSP 59285-89 (5). Additional material (12). Type catalog: Böhlke 1984:25 [ref. 13621], Ferraris 2007:104 [ref. 29155]. •Valid as Leiocassis bicolor Fowler 1934 -- (Burgess 1989:70 [ref. 12860]). •Valid as Pseudomystus bicolor (Fowler 1934) -- (Mo 1991:140 [ref. 19952]). •Valid as Pseudomystus bicolor (Fowler 1934), but possibly a synonym of Pseudomystus siamensis (Regan 1913) -- (Ng & Rachmatika 1999:176, 178 [ref. 23964]). •Synonym of Pseudomystus siamensis (Regan 1913) -- (Kottelat 2001:125 [ref. 25780], Ng & Lim 2005:16 [ref. 28081], Ferraris 2007:104 [ref. 29155], Kottelat 2013:265 [ref. 32989]). Current status: Synonym of Pseudomystus siamensis (Regan 1913). Bagridae. Habitat: freshwater.

bomboides, Pseudomystus Kottelat [M.] 2000:77, Fig. 69 [Journal of South Asian Natural History v. 5 (no. 1); ref. 25040] Mekong basin, confluence of Nam Leuk and Nam Ngong, 18°22'04"N, 103°05'27"E, Vientiane Province, Laos. Holotype: ZRC 45426. Paratypes: CMK 13256 (4), LARRI uncat. (2), ZRC 45493 (2). Type catalog: Ferraris 2007:103 [ref. 29155], Ng & Kim 2008:35 [ref. 29920]. •Valid as Pseudomystus bomboides Kottelat 2000 -- (Kottelat 2001:125 [ref. 25780], Ng & Siebert 2005:6 [ref. 28064], Ng & Lim 2005:16 [ref. 28081], Ng & Freyhof 2005:750 [ref. 28480], Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng 2025:332 [ref. 42247]). Current status: Valid as Pseudomystus bomboides Kottelat 2000. Bagridae. Distribution: Southeast Asia: Mekong River basin, Thailand and Laos. Habitat: freshwater.

breviceps, Liocassis Regan [C. T.] 1913:551 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 66); ref. 14980] Deli [= Medan] River, Sumatra, Indonesia. Lectotype: BMNH 1889.11.12.64. Paralectotypes: BMNH 1889.11.12.65 (1, = Pseudomystus stenomus), 1889.11.12.66 (1). Type catalog: Ferraris 2007:103 [ref. 29155]. Lectotype selected by Ng 2025:332 [ref. 42247]. •Valid as Liocassis breviceps Regan 1913 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:63 [ref. 23448]). •Valid as Pseudomystus breviceps (Regan 1913) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Ng & Lim 2005:14 [ref. 28081], Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng 2025:323 [ref. 42247]). Current status: Valid as Pseudomystus breviceps (Regan 1913). Bagridae. Distribution: Southeast Asia: Deli River drainage, northern Sumatra, Chantaburi River drainage, southeastern Thailand, and river drainages in the Malay Peninsula from the Tapi River drainage southwards to the Endau River drainage. Habitat: freshwater.

carnosus, Pseudomystus Ng [H. H.] & Lim [K. K. P.] 2005:7, Fig. 2a, 3b, 5 [Zootaxa No. 851; ref. 28081] Sukadana, Sumatra. Holotype: RMNH 15859. Paratypes: RMNH 15860 (2), 35223 (1). Type catalog: Ferraris 2007:103 [ref. 29155]. •Valid as Pseudomystus carnosus Ng & Lim 2005 -- (Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Kottelat 2013:265 [ref. 32989]). •Synonym of Pseudomystus moeschii (Boulenger 1890) -- (Ng & Tan 2024:552 [ref. 41425]). Current status: Synonym of Pseudomystus moeschii (Boulenger 1890). Bagridae. Habitat: freshwater.

ellenriederii, Leiocassis Bleeker [P.] 1860:10 [Acta Societatis Regiae Scientiarum Indo-Neêrlandicae v. 8 (art. 3); ref. 376] Lahat, Palembang Province, Sumatra, Indonesia. Syntypes (?): (3) BMNH 1863.12.4.156 (1), RMNH 6874 (2). Type catalog: Ferraris 2007:104 [ref. 29155]. For possible syntypes and images see Grant 2009 [ref. 30132]. •Synonym of Pseudomystus stenomus (Valenciennes 1840) -- (Ferraris 2007:104 [ref. 29155], Grant 2009:16 [ref. 30132], Kottelat 2013:266 [ref. 32989], Ng 2025:319 [ref. 42247]). Current status: Synonym of Pseudomystus stenomus (Valenciennes 1840). Bagridae. Habitat: freshwater.

flavipinnis, Pseudomystus Ng [H. H.] & Rachmatika [I.] 1999:175, Fig. 5 [Raffles Bulletin of Zoology v. 47 (no. 1); ref. 23964] Sungai Embaloh at Benua Marinus, Kalimantan Barat, Borneo, Indonesia. Holotype: MZB 6593. Paratypes: MNHN 1891-0475 (1). Type catalog: Ferraris 2007:103 [ref. 29155]. •Valid as Pseudomystus flavipinnis Ng & Rachmatika 1999 -- (Ng & Lim 2005:16 [ref. 28081], Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:326 [ref. 42247]). Current status: Valid as Pseudomystus flavipinnis Ng & Rachmatika 1999. Bagridae. Distribution: Southeast Asia: Kapuas, Pawan and Kahayan River drainages, western, southwestern and south-central Borneo, Indonesia. Habitat: freshwater.

fumosus, Pseudomystus Ng [H. H.] & Lim [K. K. P.] 2005:11, 2b, 3a, 6 [Zootaxa No. 851; ref. 28081] Kuala Tahan, Taman Negara, Pahang, Malaysia. Holotype: ZRC 3229. Paratypes: UMKL [= BIRCUM] 4428 (1). Type catalog: Ferraris 2007:103 [ref. 29155], Ng & Kim 2008:37 [ref. 29920]. •Valid as Pseudomystus fumosus Ng & Lim 2005 -- (Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:552 [ref. 41425], Ng 2025:332 [ref. 42247]). Current status: Valid as Pseudomystus fumosus Ng & Lim 2005. Bagridae. Distribution: Southeast Asia: Pahang River drainage, eastern Peninsular Malaysia. Habitat: freshwater.

funebris, Pseudomystus Ng [H. H.] 2010:87, Figs. 1, 2a, 4a [Raffles Bulletin of Zoology v. 58 (no. 1); ref. 30732] Rungan River drainage in the vicinity of Tangkiling, 2°01'S, 113°44'E, Kalimantan Tengah, Borneo, Indonesia. Holotype: MZB 17181. Paratypes: MZB 17182 (11); UMMZ 248771 (12); ZRC 51845 (13), 51846 (4). •Valid as Pseudomystus funebris Ng 2010 -- (Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:332 [ref. 42247]). Current status: Valid as Pseudomystus funebris Ng 2010. Bagridae. Distribution: Southeast Asia: Kahayan River basin, south-central Borneo, Indonesia. Habitat: marine.

heokhuii, Pseudomystus Lim [K. K. P.] & Ng [H. H.] 2008:38, Figs. 1, 2a, 3a, 4a [Zootaxa No. 1686; ref. 29456] Batang Hari drainage at Rantau Panjang, Jambi, Sumatra. Holotype: MZB 10717. Paratypes: (many) at CMK, UMMZ and ZRC. •Valid as Pseudomystus heokhuii Lim & Ng 2008 -- (Ng 2010:90 [ref. 30732], Kottelat 2013:265 [ref. 32989], Ng 2025:332 [ref. 42247]). Current status: Valid as Pseudomystus heokhuii Lim & Ng 2008. Bagridae. Distribution: Southeast Asia: Batang Hari and Indragiri River drainages, central Sumatra, Indonesia. Habitat: freshwater.

inornatus, Liocassis Boulenger [G. A.] 1894:245 [Annals and Magazine of Natural History (Series 6) v. 13 (no. 75) (art. 26); ref. 535] Senah, Sarawak, Borneo, eastern Malaysia. Holotype (unique): BMNH 1893.3.6.179. Type catalog: Ferraris 2007:103 [ref. 29155]. Original genus should have been Leiocassis. •Valid as Leiocassis inornatus Boulenger 1894 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:63 [ref. 23448]). •Valid as Pseudomystus inornatus (Boulenger 1894) -- (Mo 1991:140 [ref. 19952], Kottelat & Lim 1996:239 [ref. 23210], Ng & Rachmatika 1999:179 [ref. 23964], Grinang & Lim 2004:290 [ref. 28551], Ng & Siebert 2005:3 [ref. 28064], Ng & Lim 2005:16 [ref. 28081], Parenti & Lim 2005:190 [ref. 28285], Ferraris 2007:103 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus inornatus (Boulenger 1894). Bagridae. Distribution: Southeast Asia: Sarawak, Borneo. Habitat: freshwater.

leiacanthus, Leiocassis Weber [M.] & de Beaufort [L. F.] 1912:536 [15], Pl. 2 (figs. 1-1a) [Durch Zentral-Sumatra. Von Alfred Maass... Berlin. v. 2; ref. 14895] Indragiri [Kwantan] River, Ringat and Taluk, Sumatra, Indonesia. Syntypes: ZMA 112671-72 (1, 1). Type catalog: Nijssen et al. 1982:56 [ref. 19236], Ferraris 2007:104 [ref. 29155]. On p. 15 of separate. •Valid as Leiocassis leiacanthus Weber & de Beaufort 1912 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:63 [ref. 23448]). •Valid as Pseudomystus leiacanthus (Weber & de Beaufort 1912) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Tan & Ng 1999:280 [ref. 24254], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng et al. 2019:530 [ref. 36606], Ahmad et al. 2023:102 [ref. 41243], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus leiacanthus (Weber & de Beaufort 1912). Bagridae. Distribution: Southeast Asia: Malaya (Malaysia), Sumatra (Indonesia). IUCN (2019): Least Concern. Habitat: freshwater.

mahakamensis, Leiocassis Vaillant [L. L.] 1902:55, Figs. 4-5 [Notes from the Leyden Museum v. 24 (note 1); ref. 4490] Tepoe, Mahakam River, eastern Kalimantan, Borneo, Indonesia. Syntypes: RMNH 7838 (2). Type catalog: Ferraris 2007:104 [ref. 29155]. •Valid as Leiocassis mahakamensis Vaillant 1902 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:64 [ref. 23448]). •Valid as Pseudomystus mahakamensis (Vaillant 1902) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Ng & Siebert 2005:3 [ref. 28064], Ng & Lim 2005:16 [ref. 28081], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:45 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ahmad et al. 2023:103 [ref. 41243] as cf. mahakamensis, Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus mahakamensis (Vaillant 1902). Bagridae. Distribution: Southeast Asia: eastern Borneo and (?) Sumatra (Indonesia). Habitat: freshwater.

moeschii, Liocassis Boulenger [G. A.] 1890:39 [Proceedings of the Zoological Society of London 1890 (pt 1); ref. 14494] Deli [= Medan] River, Sumatra, Indonesia. Lectotype: BMNH 1889.11.12.66. Paralectotypes: BMNH 1889.11.12.64-65 (2). Type catalog: Ferraris 2007:104 [ref. 29155]. Lectotype selected by Ng & Lim 2005:14 [ref. 28081]. Original genus should have been Leiocassis. •Valid as Leiocassis moeschii Boulenger 1890 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:64 [ref. 23448]). •Valid as Pseudomystus moeschii (Boulenger 1890) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Ng & Lim 2005:2 [ref. 28081], Kim & Ng 2008:46 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:552 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus moeschii (Boulenger 1890). Bagridae. Distribution: Southeast Asia: Deli south to the Way Seputih River drainages, Sumatra, Indonesia. Habitat: freshwater.

myersi, Leiocassis Roberts [T. R.] 1989:117, Fig. 92 [Memoirs of the California Academy of Sciences No. 14; ref. 6439] Small forest stream flowing into Kapuas River mainstream, about 0°24'N, 111°51'E, northeast of Gunung Setunggul, Borneo. Holotype: MZB 3588. Paratypes: BMNH 1982.3.29.153-154 (2); CAS 49375 (2); MNHN 1982-0703 (1); MZB 3589-91 (2, 1, 1); RMNH 28885 (1); USNM 230280 (3). Type catalog: Ferraris & Vari 1992:11 [ref. 19771], Ferraris 2007:104 [ref. 29155]. •Valid as Leiocassis myersi Roberts 1989 -- (Kottelat et al. 1993:64 [ref. 23448], Burgess & Finley 1996:164 [ref. 22901]). •Valid as Pseudomystus myersi (Roberts 1989) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:178 [ref. 23964], Ng & Lim 2005:16 [ref. 28081], Kottelat & Widjanarti 2005:160 [ref. 28284], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus myersi (Roberts 1989). Bagridae. Distribution: Southeast Asia: Kapuas River basin, western Borneo, Indonesia. Habitat: freshwater.

nuchalis, Pseudomystus Ng [H. H.] 2025:329, Fig. 4 [Raffles Bulletin of Zoology v. 73; ref. 42247] Small tributary of Sungai Laung, Barito River drainage, Kalimantan Tengah, Borneo, 0°20'57"S, 114°43'00"E. Holotype: MZB 17249. Paratypes: BMNH, ZRC. •Valid as Pseudomystus nuchalis Ng 2025. Current status: Valid as Pseudomystus nuchalis Ng 2025. Bagridae. Distribution: Southeast Asia: Barito River drainage, Kalimantan Tengah, Borneo. Habitat: freshwater.

robustus, Leiocassis Inger [R. F.] & Chin [P. K.] 1959:290, Fig. 48 [Fieldiana Zoology v. 39 (no. 27); ref. 11998] Kinabatangan River at Deramakot, Kinabatangan District, Malaysia. Holotype: FMNH 68001. Paratypes: BMNH 1958.4.28.2 [ex FMNH] (1); FMNH 44827 (1), 68002-03 (1, 1), 68040 (2); N. Borneo Mus. [ex FMNH] (1); RMNH [ex FMNH] (3). Type catalog: Ibarra & Stewart 1987:51 [ref. 12367], Ferraris 2007:104 [ref. 29155]. •Valid as Leiocassis robustus Inger & Chin 1959 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:65 [ref. 23448]). •Valid as Pseudomystus robustus (Inger & Chin 1959) -- (Mo 1991:140 [ref. 19952], Martin-Smith & Tan 1998:590 [ref. 23647], Ng & Rachmatika 1999:178 [ref. 23964], Ng & Siebert 2005:3 [ref. 28064], Ng & Lim 2005:16 [ref. 28081], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus robustus (Inger & Chin 1959). Bagridae. Distribution: Southeast Asia: Kinabatangan River basin, Sabah, Borneo. Habitat: freshwater.

rugosus, Liocassis Regan [C. T.] 1913:552 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 66); ref. 14980] Puh [Poeh], Sarawak, Borneo, Malaysia. Holotype (unique): BMNH 1893.3.6.172. Type catalog: Ferraris 2007:104 [ref. 29155]. Original genus should have been Leiocassis. •Valid as Leiocassis rugosus Regan 1913 -- (Burgess 1989:70 [ref. 12860], Kottelat et al. 1993:65 [ref. 23448]). •Valid as Pseudomystus rugosus (Regan 1913) -- (Mo 1991:140 [ref. 19952], Kottelat & Lim 1996:239 [ref. 23210], Ng & Rachmatika 1999:176 [ref. 23964], Tan & Ng 1999:281 [ref. 24254], Doi et al. 2001:16 [ref. 25691], Ng & Siebert 2005:6 [ref. 28064], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus rugosus (Regan 1913). Bagridae. Distribution: Southeast Asia: Sarawak, Borneo. Habitat: freshwater.

siamensis, Liocassis Regan [C. T.] 1913:550 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 66); ref. 14980] Bangpakong River, Chao Phraya basin, Thailand. Holotype (unique): BMNH 1897.10.8.126. Type catalog: Ferraris 2007:104 [ref. 29155]. Original genus should have been Leiocassis. •Valid as Leiocassis siamensis Regan 1913 -- (Burgess 1989:71 [ref. 12860], Rainboth 1996:140 [ref. 22772]). •Valid as Pseudomystus siamensis (Regan 1913) -- (Mo 1991:140 [ref. 19952], Kottelat 1998:101 [ref. 23436], Ng & Rachmatika 1999:176 [ref. 23964], Freyhof et al. 2000:96 [ref. 25184], Kottelat 2001:125 [ref. 25780], Ng & Siebert 2005:6 [ref. 28064], Ng & Lim 2005:16 [ref. 28081], Ng & Freyhof 2005:748 [ref. 28480], Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Kottelat 2015:46 [ref. 33971], Taki et al. 2021:282 [ref. 39830], Chungthanawong et al. 2025:66 [ref. 41920], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus siamensis (Regan 1913). Bagridae. Distribution: Southeast Asia: Mekong and Chao Phraya River basins, Thailand, Laos, Cambodia and Vietnam. Habitat: freshwater.

sobrinus, Pseudomystus Ng [H. H.] & Freyhof [J.] 2005:745, Figs. 1-2 [Copeia 2005 (no. 4); ref. 28480] Stream about 15 kilometers south of Tuy Hoa, 12°53'05"N, 109°23'70"E, Phu Yen Province, Vietnam. Holotype: ZFMK 27167. Paratypes: UMMZ 245016 (3); ZFMK 24068-24073 (6), 27166 (1), 27168-27183 (17), 27184-27185 (2); ZRC 49127 (2). Type catalog: Ferraris 2007:104 [ref. 29155], Ng & Kim 2008:38 [ref. 29920], Herder et al. 2010:119 [ref. 31087]. •Valid as Pseudomystus sobrinus Ng & Freyhof 2005 -- (Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus sobrinus Ng & Freyhof 2005. Bagridae. Distribution: Southeast Asia: Song Ba and nearby rivers, southern Vietnam. Habitat: freshwater.

stenogrammus, Pseudomystus Ng [H. H.] & Siebert [D. J.] 2005:2, Figs. 1, 3a [Zootaxa No. 813; ref. 28064] Sungai Laung at Dessa Maruwei, Sungai, Kalimantan Tengah, Borneo. Holotype: MZB 6103. Paratypes: BMNH 1998.10.1.1 (1), 1998.10.1.2 (1), 1998.10.1.4 (1), 1998.10.1.6 (1); ZRC 46152 (1). Type catalog: Ferraris 2007:104 [ref. 29155], Ng & Kim 2008:38 [ref. 29920]. Pseudomystus ornatus is a nomen nudum appearing in the figure caption. •Valid as Pseudomystus stenogrammus Ng & Siebert 2005 -- (Ferraris 2007:104 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:265 [ref. 32989], Ng & Tan 2024:551 [ref. 41425], Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus stenogrammus Ng & Siebert 2005. Bagridae. Distribution: Southeast Asia: Barito River drainage, Kalimantan Tengah, Borneo. Habitat: freshwater.

stenomus, Bagrus Valenciennes [A.] in Cuvier & Valenciennes 1840:415 [Histoire naturelle des poissons v. 14; ref. 4882] Java (Indonesia). Holotype (unique): RMNH 2986. Type information: Roberts 1993:27 [ref. 21799]. Type catalog: Ferraris 2007:104 [ref. 29155]. For images of the holotype see Grant 2009 [ref. 30132]. See van Oijen et al. 2009:147 [ref. 30423]. •Valid as Leiocassis stenomus (Valenciennes 1840) -- (Burgess 1989:71 [ref. 12860], Kottelat et al. 1993:65 [ref. 23448], Roberts 1993:27 [ref. 21799], Rainboth 1996:140 [ref. 22772]). •Valid as Pseudomystus stenomus (Valenciennes 1840) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Ng & Tan 1999:359 [ref. 24159] with author as Fowler, Tan & Ng 1999:281 [ref. 24254], Ng & Lim 2005:17 [ref. 28081], Kottelat & Widjanarti 2005:160 [ref. 28284] as cf. stenomus, Parenti & Lim 2005:190 [ref. 28285], Ferraris 2007:104 [ref. 29155], Ng 2008:98 [ref. 29540], Grant 2009:16 [ref. 30132], Ng 2010:67 [ref. 31047], Kottelat 2013:266 [ref. 32989], Ahmad et al. 2023:105 [ref. 41243], Ng 2025:319 [ref. 42247]). Current status: Valid as Pseudomystus stenomus (Valenciennes 1840). Bagridae. Distribution: Southeast Asia: Sumatra and Java (Indonesia); probably extirpated in Java. Habitat: freshwater.

tuberosus, Pseudomystus Ng [H. H.] & Tan [H. H.] 2024:547, Fig. 1 [Zootaxa 5496 (no. 4); ref. 41425] Stream near Tangkiling, Rungan River sub-drainage, Kahayan River drainage, Kalimantan Tengah, Borneo. Holotype: MZB 17244. Paratypes: ZRC 54541 (2). •Valid as Pseudomystus tuberosus Ng & Tan 2024 -- (Ng 2025:333 [ref. 42247]). Current status: Valid as Pseudomystus tuberosus Ng & Tan 2024. Bagridae. Distribution: Southeast Asia: Kahayan River drainage, Kalimantan Tengah, south central Borneo, Indonesia. Habitat: freshwater.

vaillanti, Liocassis Regan [C. T.] 1913:549 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 66); ref. 14980] Mouth of Raun River, Kapuas basin, Borneo. Holotype (unique): RMNH 7840. Type catalog: Ferraris 2007:105 [ref. 29155]. Original genus should have been Leiocassis. •Valid as Leiocassis vaillanti Regan 1913 -- (Roberts 1989:120 [ref. 6439], Burgess 1989:71 [ref. 12860], Kottelat et al. 1993:65 [ref. 23448]). •Valid as Pseudomystus vaillanti (Regan 1913) -- (Mo 1991:140 [ref. 19952], Ng & Rachmatika 1999:177 [ref. 23964], Ng & Lim 2005:17 [ref. 28081], Ferraris 2007:105 [ref. 29155], Kim & Ng 2008:46 [ref. 29456], Ng 2008:98 [ref. 29540], Kottelat 2013:266 [ref. 32989], Ng & Tan 2024:550 [ref. 41425], Ng 2025:334 [ref. 42247]). Current status: Valid as Pseudomystus vaillanti (Regan 1913). Bagridae. Distribution: Southeast Asia: Kapuas River basin, Kalimantan Barat, western Borneo, Indonesia. Habitat: freshwater.