guadalupensis, Amia Osburn [R. C.] & Nichols [J. T.] 1916:160, Fig. 9 [Bulletin of the American Museum of Natural History v. 35 (art. 16); ref. 15062] Guadalupe Island, Baja California, Mexico. Holotype (unique): USNM 87545 [ex AMNH 5204]. •Valid as Apogon guadalupensis (Osburn & Nichols 1916) -- (Allen & Robertson 1994:122 [ref. 22193], De La Cruz Agüero et al. 1997:54 [ref. 24545], Grove & Lavenberg 1997:345 [ref. 24023], Lea & Rosenblatt 2000:122 [ref. 25206], Thomson et al. 2000:112 [ref. 25640], Richards & Engle 2001:179 [ref. 25759], Fraser & Randall 2002:26 [ref. 25969], Nelson et al. 2004:138 [ref. 27807], Love et al. 2005:114 [ref. 37547], Page et al. 2013:142 [ref. 32708], Mabuchi et al. 2014:197 [ref. 33426] with question, Fourriére et al. 2016:445 [ref. 34668], Del Moral-Flores et al. 2016:609 [ref. 34923], Kells et al. 2016:228 [ref. 35888], Piñeros et al. 2018:234 [ref. 36377], Walker et al. 2020:4 [ref. 37499], Love et al. 2021:151 [ref. 39279]). •Synonym of Apogon atricaudus Jordan & McGregor 1898 -- (Fraser in Kuiter & Kozawa 2019:28 [ref. 36965], Lea et al. 2022:107 [ref. 39165]). Current status: Synonym of Apogon atricaudus Jordan & McGregor 1898. Apogonidae: Apogoninae. Distribution: Eastern Pacific: Pacific coast of Baja California (Mexico), Guadalupe Island (Mexico) and Revillagigedo Islands (Mexico), straying to southern California (U.S.A.) [if valid]. Habitat: marine.