monoceros, Heniochus Cuvier [G.] in Cuvier & Valenciennes 1831:100, Pl. 176 [Histoire naturelle des poissons v. 7; ref. 4881] Mauritius, Mascarenes, southwestern Indian Ocean. Holotype (unique): MNHN 0000-5733. •Valid as Heniochus monoceros Cuvier 1831 -- (Allen 1980:163 [ref. 22764], Ida in Masuda et al. 1984:186 [ref. 6441], Heemstra 1986:632 [ref. 5660], Blum 1989:12 [ref. 37553], Randall et al. 1990:234 [ref. 15987], Kuiter 1993:226 [ref. 23929], Francis 1993:163 [ref. 25479], Allen 1997:154 [ref. 23977], Kuiter 1997:224 [ref. 25488], Randall et al. 1997:234 [ref. 25919], Myers 1999:168 [ref. 23965], Fricke 1999:344 [ref. 24106], Johnson 1999:740 [ref. 25471], Randall 1999:18 [ref. 25829], Allen 2000:89 [ref. 37268], Pyle in Randall & Lim 2000:624 [ref. 25122], Nakabo 2000:884 [ref. 25182], Laboute & Grandperrin 2000:303 [ref. 25191], Hutchins 2001:265 [ref. 25841], Hutchins 2001:36 [ref. 25847], Pyle 2001:3263 [ref. 26117], Nakabo 2002:884 [ref. 26193], Allen & Adrim 2003:43 [ref. 26830], Smith et al. 2003:302 [ref. 27125], Manilo & Bogorodsky 2003:S112 [ref. 27377], Myers & Donaldson 2003:630 [ref. 27495], Randall et al. 2004:19 [ref. 27624], Heemstra et al. 2004:3323 [ref. 27945], Randall 2005:327 [ref. 28239], Allen et al. 2006:1300 [ref. 29090], Fricke et al. 2009:74 [ref. 30213], Motomura et al. 2010:139 [ref. 31256], Caratini & Soriano 2011:78 [ref. 39915], Zuo & Tang 2011:1003 [ref. 32151], Allen & Erdmann 2012:540 [ref. 31980], Fricke et al. 2013:262 [ref. 32706], Koeda et al. 2016:9 [ref. 35354], Fricke et al. 2018:241 [ref. 35805], Dalleau-Coudert et al. 2019:151 [ref. 40104], Franklin et al. 2019:103 [ref. 37345], Fricke et al. 2019:192 [ref. 36673], Durville et al. 2021:313 [ref. 38802], Heemstra & Heemstra 2022:467 [ref. 39746], Allen & Erdmann 2024:573 [ref. 40796], Fricke et al. 2024:69 [ref. 41255]). Current status: Valid as Heniochus monoceros Cuvier 1831. Chaetodontidae: Heniochinae. Distribution: Indo-West Pacific: Aliwal Shoal and KwaZulu-Natal (South Africa), East Africa, Seychelles, Aldabra (Seychelles), Comoros, Mozambique Channel, Madagascar and Mascarenes (La RĂ©union, Mauritius, Rodrigues) east to Marshall Islands and Henderson (Pitcairn Group), north to southern Japan, south to Western Australia, Norfolk Island (Australia) and Gambier Islands (French Polynesia). Introduced at Hawaiian Islands (U.S.A.). Habitat: marine.
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