diodontus, Kaupichthys Schultz [L. P.] 1943:50, Pl. 6, Fig. 5i [Bulletin of the United States National Museum No. 180; ref. 3957] Reef at Siulagi Point, Tau Island, American Samoa. Holotype: USNM 115980. Paratypes: MCZ 37284 [ex USNM 115981] (1). Type catalog: Smith 1994:4 [ref. 21917]. •Synonym of Kaupichthys hyoproroides (Strömman 1896) -- (Smith 1989:88 [ref. 13285]). •Possibly valid -- (Smith 1994:4 [ref. 21917], Myers 1999:42 [ref. 23965], Mundy 2005:112 [ref. 28379]). •Valid as Kaupichthys diodontus Schultz 1943 -- (Randall et al. 1997:33 [ref. 25919], Smith 1999:1640 [ref. 24661], Randall 1999:5 [ref. 25829], Allen 2000:84 [ref. 37268], Randall & Earle 2000:6 [ref. 25806], Allen & Adrim 2003:22 [ref. 26830], Myers & Donaldson 2003:610 [ref. 27495], Randall et al. 2004:6 [ref. 27624], Heemstra et al. 2004:3317 [ref. 27945], Paxton et al. 2006:242 [ref. 28994], Randall 2007:72 [ref. 30952], Fricke et al. 2011:349 [ref. 31242], Hubert et al. 2012:3 [ref. 31846], Allen & Erdmann 2012:74 [ref. 31980], Fricke et al. 2014:17 [ref. 33932], Delrieu-Trottin et al. 2015:4 [ref. 33988], Fricke et al. 2018:32 [ref. 35805], Allen & Erdmann 2024:82 [ref. 40796]). Current status: Valid as Kaupichthys diodontus Schultz 1943. Chlopsidae. Distribution: Indo-West Pacific: East Africa and Madagascar east to Hawaiian Islands (U.S.A.) and Pitcairn Group, north to Ryukyu Islands (Japan), south to northern Western Australia and Queensland (Australia). Habitat: marine.