Gymnocranius (subgenus of Dentex) Klunzinger [C. B.] 1870:764 Masc. Dentex rivulatus Rüppell 1838 (= Cantharus grandoculis Valenciennes 1830). Type by monotypy. Dentex rivulatus of Rüppell 1838 is not the same as Dentex rivulatus Bennett 1835 (see Carpenter & Allen 1989:19 [ref. 13577]). •Valid as Gymnocranius Klunzinger 1870 -- (Chan & Chilvers 1974:94 [ref. 809], Johnson 1980:11 [ref. 13553], Sato in Masuda et al. 1984:179 [ref. 6441], Smith 1986:595 [ref. 5712], Sato 1986:604 [ref. 5152], Carpenter & Allen 1989:18 [ref. 13577], Carpenter 2001:3006 [ref. 26105], Allen et al. 2006:1232 [ref. 29090], Borsa et al. 2010:241 [ref. 30820], Borsa et al. 2013:233 [ref. 33484], Motomura et al. 2017:153 [ref. 35490], Chen et al. 2017:520 [ref. 35766], Fricke et al. 2018:213 [ref. 35805], Golani & Fricke 2018:98 [ref. 36273], Fricke et al. 2019:170 [ref. 36673], Mehanna et al. 2022:690 [ref. 39427]). Current status: Valid as Gymnocranius Klunzinger 1870. Lethrinidae: Monotaxinae.