nigripinnis, Platycephalus Regan [C. T.] 1905:322, Pl. 1(A) (fig. 2) [Journal of the Bombay Natural History Society v. 16; ref. 15386] Muscat, Oman, Gulf of Oman, Arabian Sea, northwestern Indian Ocean, depth 15-30 fathoms. Holotype (unique): BMNH 1904.5.25.145. •Valid as Rogadius nigripinnis (Regan 1905) -- (Knapp 1979:49 [ref. 14196], Imamura 1996:216 [ref. 22700], Imamura 2007:303 [ref. 29242]). •Valid as Sorsogona nigripinna (Regan 1905) -- (Randall 1995:118 [ref. 22896], Mohsin & Ambak 1996:578 [ref. 27969], Knapp & Heemstra 2011:75 [ref. 31327], Knapp 2022:593 [ref. 39727]). •Valid as Ratabulus nigripinnis (Regan 1905) -- (Moazzam & Osmany 2023:571 [ref. 40712]). Current status: Valid as Ratabulus nigripinnis (Regan 1905). Platycephalidae. Distribution: Northwestern Indian Ocean: Somalia and Gulf of Aden to Gulf of Oman. Habitat: marine.