Species that contain: Macrognathus and maculatus [ 7 ] records

billitonensis, Mastacembelus de Beaufort [L. F.] 1939:194 [Treubia, Buitenzorg v. 17 (pt 3); ref. 17180] Belitung Island, Indonesia. Syntypes: ZMA 111583 (3). Additional material: (3) Sumatra [not "typical locality"]. Type catalog: Nijssen et al. 1982:105 [ref. 19236]. •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Kottelat 2013:312 [ref. 32989]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.

chrysogaster, Mastacembelus maculatus var. Bleeker [P.] 1852:93 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 3 (no. 1); ref. 16831] Bogor, Tjipannas Island, Java; Pajacombo, Solok, Sumatra, Indonesia. Syntypes: Not researched. •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Kottelat 2013:311 [ref. 32989]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.

dictyogaster, Mastacembelus maculatus var. Bleeker [P.] 1852:93 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 3 (no. 1); ref. 16831] Blitong, Indonesia. Syntypes: RMNH. •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Kottelat 2013:311 [ref. 32989]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.

guentheri, Mastacembelus Day [F.] 1865:37 [Proceedings of the Zoological Society of London 1865 (pt 1) (art. 1); ref. 17367] Cochin, India. Syntypes and/or Day specimens: AMS B.8048 (1, non-type); BMNH 1865.7.17.26-27 (2) Malabar, 1975.9.30.24 (1, dry); ZSI 2150 (1, figured specimen), 2993 (1, lost). Type catalog: Whitehead & Talwar 1976:162 [ref. 23762], Ferraris et al. 2000:297 [ref. 25110]. Also appeared in Day 1865:154, Pl. 11 [ref. 1074]. Reasons for loss of ZSI type specimens during WWII see Chopra 1947:349-350 [ref. 33077]. •Questionably a synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus malabaricus (Jerdon 1849) -- (Menon 1999:302 [ref. 24904]). •Valid as Mastacembelus guentheri Day 1865 -- (Indra 1993:190 [ref. 24009] as Mastocembelus guntheri). •Valid as Macrognathus guentheri (Day 1865) -- (Travers 1984:144 [ref. 5147], Talwar & Jhingran 1991:1027 [ref. 20764], Arunkumar & Tombi Singh 2000:121 [ref. 25674], Raju Thomas et al. 2002:51 [ref. 26359], Yadav 2003:23 [ref. 27711], Pethiyagoda et al. 2008:44 [ref. 30097], Plamoottil & Abraham 2013:9 [ref. 33148], Plamoottil & Abraham 2014:51 [ref. 33147], Arunkumar 2016:2006 [ref. 35770], Arunkumar 2020:45 [ref. 37761]). Current status: Valid as Macrognathus guentheri (Day 1865). Mastacembelidae. Distribution: India. Habitat: freshwater.

maculatus, Mastacembelus Cuvier [G.] in Cuvier & Valenciennes 1832:461 [Histoire naturelle des poissons; ref. 1000] Molucca Islands [in error, East Indies]. Syntypes: MNHN 0000-5378 (2). Also appeared in Griffith & Smith 1834:Pl. 47 (fig. 2) (opp. p. 190) [ref. 1908]. •Valid as Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439], Lim et al. 1990:51 [ref. 16753] with author Valenciennes). •Valid as Macrognathus maculatus (Cuvier 1832) -- (Travers 1984:144 [ref. 5147], Kottelat et al. 1993:167 [ref. 23448], Kottelat & Lim 1996:249 [ref. 23210], Rainboth 1996:178 [ref. 22772], Ng & Tan 1999:364 [ref. 24159], Tan & Lim 2004:111 [ref. 27716], Grinang & Lim 2004:291 [ref. 28551], Kottelat & Widjanarti 2005:169 [ref. 28284], Kottelat 2013:311 [ref. 32989], Sulaiman et al. 2018:36 [ref. 35802], Ng et al. 2019:533 [ref. 36606], Ng & Tan 2020:176 [ref. 37671], Jamaluddin et al. 2022:[7] [ref. 39245]). Current status: Valid as Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Distribution: Southeast Asia: Cambodia and Vietnam to Malaysia, Sumatra and Borneo (Sabah and Sarawak). Habitat: freshwater.

perakensis, Mastacembelus Myers [G. S.] in Herre & Myers 1937:74, Pl. 7 [Bulletin of the Raffles Museum No. 13; ref. 2123] Bukit Merah Reservoir, Krian District, Perak, Malaysia. Holotype: CAS-SU 30972. Paratypes: USNM 101189 (1). Type catalog: Böhlke 1953:143 [ref. 12291]. From the text, authorship of the freshwater part was by Herre and Myers, but this is in conflict with a statement on p. 53 that the descriptive matter is the work of the senior author excepting in Danio, Encheloclarias, and Mastacembelus. The latter statement is accepted for purposes of authorship of this taxon. •Valid as Macrognathus perakensis (Myers 1937) -- (Travers 1984:144 [ref. 5147], Kottelat 2013:312 [ref. 32989]). •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Ng et al. 2019:533 [ref. 36606], Ng & Tan 2020:174 [ref. 37671]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.

vaillanti, Mastacembelus Fowler [H. W.] 1905:491, Fig. 8 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 57; ref. 1370] Baram River, Sarawak state, Borneo, East Malaysia. Holotype (unique): ANSP 114888 [ex WIAP 14206 (not 14150)]. Type catalog: Böhlke 1984:127 [ref. 13621]. •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Kottelat 2013:312 [ref. 32989]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.