mesoleucos, Chaetodon Forsskål [P. S.] in Niebuhr 1775:61, xiii [Descriptiones animalium (Forsskål); ref. 1351] [Mochhæ] Al-Mukhā, Yemen, Red Sea. No types known. Authorship according to Fricke 2008:44 [ref. 30182]. Spelled mesoleucus by some authors, but Chaetodon mesoleucus Bloch is a different species. •Valid as Chaetodon mesoleucos Forsskål 1775 -- (Burgess 1978:618 [ref. 700], Allen 1980:161 [ref. 22764], Dor 1984:175 [ref. 29757], Blum 1989:13 [ref. 37553], Goren & Dor 1994:47 [ref. 25356], Smith et al. 2003:303 [ref. 27125], Manilo & Bogorodsky 2003:S112 [ref. 27377], Fricke 2008:44 [ref. 30182], Randall & Rocha 2009:511 [ref. 30410], Bogorodsky & Randall 2018:[16] 254 [ref. 36492], Golani & Fricke 2018:109 [ref. 36273], Zajonz et al. 2019:83 [ref. 36871] as cf. mesoleucos, Heemstra & Heemstra 2022:457 [ref. 39746]). Current status: Valid as Chaetodon mesoleucos Forsskål 1775. Chaetodontidae: Chaetodontinae. Distribution: Red Sea; northwestern Indian Ocean: Gulf of Aden. Habitat: marine.