triostegus, Chaetodon Linnaeus [C.] 1758:274 [Systema Naturae, Ed. X v. 1; ref. 2787] Indies. Holotype (unique): NRM 55. Type catalog: Goode & Bean 1885:198 [ref. 1841], Fernholm & Wheeler 1983:269 [ref. 20707], Wheeler 1985:62-63 [ref. 20705]. •Valid as Acanthurus triostegus (Linnaeus 1758), subspecies triostegus (Linnaeus 1758) -- (Allen & Robertson 1997:832 [ref. 41086]). •Valid as Acanthurus triostegus (Linnaeus 1758) -- (Randall 1956:172 [ref. 12221], Lindberg & Krasyukova 1975:236 [ref. 7348], Kishimoto in Masuda et al. 1984:230 [ref. 6441], Randall 1986:816 [ref. 5706], Allen & Swainston 1988:140 [ref. 25477], Pequeño 1989:66 [ref. 14125], Winterbottom et al. 1989:64 [ref. 13251], Desoutter 1990:964 [ref. 18967], Randall et al. 1990:426 [ref. 15987], Kuiter 1993:373 [ref. 23929], Francis 1993:167 [ref. 25479], Allen & Robertson 1994:272 [ref. 22193], Krupp in Fischer et al. 1995:843 [ref. 22829], AMohsin & Ambak 1996:556 [ref. 27969], llen 1997:224 [ref. 23977], De La Cruz Agüero et al. 1997:47 [ref. 24545], Chen et al. 1997:154 [ref. 26476], Grove & Lavenberg 1997:565 [ref. 24023], Kuiter 1997:368 [ref. 25488], Randall et al. 1997:426 [ref. 25919], Myers 1999:271 [ref. 23965], Fricke 1999:542 [ref. 24106], Johnson 1999:750 [ref. 25471], Randall 1999:28 [ref. 25829], Allen 2000:93 [ref. 37268], Randall in Randall & Lim 2000:642 [ref. 25122], Nakabo 2000:1326 [ref. 25182], Laboute & Grandperrin 2000:428 [ref. 25191], Thomson et al. 2000:255 [ref. 25640], Allen 2000:123 [ref. 25868], Matsuura & Peristiwady in Matsuura & Peristiwady 2000:294 [ref. 27511], Sakai et al. 2001:122 [ref. 25693], Hutchins 2001:270 [ref. 25841], Hutchins 2001:45 [ref. 25847], Kuiter & Debelius 2001:38 [ref. 26232], Randall 2001:3674 [ref. 26301], Nakabo 2002:1326 [ref. 26193], Allen & Adrim 2003:63 [ref. 26830], Matsuura et al. in Kimura & Matsuura 2003:204 [ref. 27510], Manilo & Bogorodsky 2003:S120 [ref. 27377] as a valid subspecies, Myers & Donaldson 2003:647 [ref. 27495] as a valid subspecies, Lobel & Lobel 2004:77 [ref. 27576], Randall et al. 2004:30 [ref. 27624], Adrim et al. 2004:127 [ref. 27715], Nelson et al. 2004:174 [ref. 27807], Heemstra et al. 2004:3330 [ref. 27945], Heemstra & Heemstra 2004:402 [ref. 28072], Love et al. 2005:164 [ref. 37547], Randall 2005:583 [ref. 28239], Mundy 2005:491 [ref. 28379] with subspecies, Allen et al. 2006:1737 [ref. 29094], Randall 2007:426 [ref. 30952], Béarez & Séret 2009:151 [ref. 36646], Fricke et al. 2009:107 [ref. 30213], Imamura 2009:304 [ref. 30434], McCosker & Rosenblatt 2010:194 [ref. 30957] as subspecies, Motomura et al. 2010:227 [ref. 31256], Caratini & Soriano 2011:22 [ref. 39915], Allen & Erdmann 2012:1025 [ref. 31980], Page et al. 2013:180 [ref. 32708], Fricke et al. 2013:271 [ref. 32706], Fricke et al. 2014:184 [ref. 33932], Delrieu-Trottin et al. 2015:8 [ref. 33988], Duffy & Ahyong 2015:117 [ref. 36167], Struthers 2015:1594 [ref. 34302], Fourriére et al. 2016:450 [ref. 34668], Del Moral-Flores et al. 2016:611 [ref. 34923], Koeda et al. 2016:102 [ref. 35333], Koeda et al. 2016:17 [ref. 35354], Fricke et al. 2018:353 [ref. 35805], Suresh et al. 2018:304 [ref. 36495], Arndt & Fricke 2019:9 [ref. 36883], Dalleau-Coudert et al. 2019:142 [ref. 40104], Eagderi et al. 2019:34 [ref. 37020], Fricke et al. 2019:302 [ref. 36673], Hoschke et al. 2019:160 [ref. 36626], Zajonz et al. 2019:99 [ref. 36871], Love et al. 2021:208 [ref. 39279], Furuhashi & Motomura 2022:16 [ref. 39607], Grove et al. 2022:22 [ref. 41326], Randall 2022:229 [ref. 40150], Page et al. 2023:163 [ref. 40505], Fricke et al. 2024:63 [ref. 41255], Noushad K. et al. 2024:46 [ref. 40947], Zajonz et al. 2024:[8] [ref. 41238]). Current status: Valid as Acanthurus triostegus (Linnaeus 1758). Acanthuridae. Distribution: Indo-Pacific: Eastern Cape and KwaZulu-Natal (South Africa), East Africa, Persian Gulf, Socotra (Yemen), Seychelles, Comoros, Madagascar and Mascarenes (La Réunion, Mauritius, Rodrigues) east to Hawaiian Islands (U.S.A.), north to southern Japan and Ogasawara Islands (Japan), south to Rottnest Island (Western Australia), Sydney (New South Wales, Australia), Lord Howe Island, New Caledonia, Kermadec Islands, Rapa (French Polynesia) and Ducie (Pitcairn Group); eastern Pacific: southern tip of Baja California Sur (Mexico) south to Chile, including Gulf of California (Mexico), Clipperton Island (France) and Galapagos Islands (Ecuador). Habitat: marine.