diacanthus, Chaetodon Boddaert [P.] 1772:1, Pl. [De Chaetodonte diacantho descripto .... 1 pl.; ref. 16974] Ambon Island, Molucca Islands, Indonesia. Holotype: MJAS (whereabouts unknown). •Valid as Pygoplites diacanthus subspecies diacanthus (Boddaert 1772) -- (Coleman et al. 2016:243 [ref. 34402], Heemstra 2022:442 [ref. 39850]). •Valid as Pygoplites diacanthus (Boddaert 1772) -- (Klausewitz 1972:368 [ref. 30491], Allen 1980:251 [ref. 22764], Dor 1984:172 [ref. 29757], Araga in Masuda et al. 1984:188 [ref. 6441], Smith & Heemstra 1986:626 [ref. 5714], Allen & Swainston 1988:100 [ref. 25477], Winterbottom et al. 1989:44 [ref. 13251], Randall et al. 1990:246 [ref. 15987], Goren & Dor 1994:48 [ref. 25356], Allen 1997:156 [ref. 23977], Chen et al. 1997:127 [ref. 26476], Kuiter 1997:234 [ref. 25488], Randall et al. 1997:246 [ref. 25919], Myers 1999:172 [ref. 23965], Fricke 1999:350 [ref. 24106], Johnson 1999:740 [ref. 25471], Allen 2000:107 [ref. 25868], Allen 2000:90 [ref. 37268], Iwatsuki et al. 2000:102 [ref. 26368], Laboute & Grandperrin 2000:311 [ref. 25191], Nakabo 2000:902 [ref. 25182], Pyle in Randall & Lim 2000:624 [ref. 25122], Hutchins 2001:266 [ref. 25841], Hutchins 2001:36 [ref. 25847], Pyle 2001:3286 [ref. 26118], Nakabo 2002:902 [ref. 26193], Manilo & Bogorodsky 2003:S112 [ref. 27377], Myers & Donaldson 2003:631 [ref. 27495], Randall et al. 2004:19 [ref. 27624], Adrim et al. 2004:122 [ref. 27715], Heemstra & Heemstra 2004:283 [ref. 28072], Randall 2005:343 [ref. 28239], Mundy 2005:408 [ref. 28379], Allen et al. 2006:1309 [ref. 29090], Satapoomin 2009:195 [ref. 30463], Hobbs et al. 2010:67 [ref. 30769], Motomura et al. 2010:141 [ref. 31256], Allen & Erdmann 2012:560 [ref. 31980], Fricke et al. 2013:263 [ref. 32706], Fricke et al. 2014:107 [ref. 33932], Koeda et al. 2016:61 [ref. 35333], Koeda et al. 2016:9 [ref. 35354], Fricke et al. 2018:243 [ref. 35805], Fricke et al. 2019:199 [ref. 36673], Allen & Erdmann 2024:594 [ref. 40796]). Current status: Valid as Pygoplites diacanthus (Boddaert 1772). Pomacanthidae. Distribution: Red Sea; Indo-West Pacific: KwaZulu-Natal (South Africa), East Africa, Persian Gulf, Seychelles, Comoros, Madagascar, Mascarenes (Mauritius), Maldives and Chagos Archipelago east to Gambier Islands, north to southern Japan and Ryukyu Islands and Ogasawara Islands, south to Western Australia, Queensland (Australia) and New Caledonia. Red Sea and Indian Ocean as the subspecies flavescens, but misidentified, subspecies is still undescribed [ref. 34402; R. Fricke, pers. comm., 11/18]. Habitat: marine.