diadematus, Tetraodon Rüppell [W. P. E. S.] 1829:65, Pl. 17 (fig. 3) [Atlas zu der Reise im nördlichen Africa. Fische des Rothen Meeres; ref. 3843] Red Sea. Lectotype: SMF 264. Paralectotypes: SMF 4643 (1, dry). Lectotype established by Dor 1984:285 [ref. 29757] if not designated earlier. •Synonym of Arothron nigropunctatus (Bloch & Schneider 1801) -- (Dor 1984:284 [ref. 29757]). •Valid as Arothron diadematus (Rüppell 1829) -- (Myers 1999:289 [ref. 23965], Su & Tyler 1986:21 [ref. 11531], Randall 2005:646 [ref. 28239], Fricke 2008:59 [ref. 30182], DiBattista et al. 2015:21 [ref. 35706], Matsuura 2016:[6] [ref. 34211], Bogorodsky & Randall 2018:[7] 245 [ref. 36492], Golani & Fricke 2018:181 [ref. 36273], Matsuura 2022:457 [ref. 40261]). Current status: Valid as Arothron diadematus (Rüppell 1829). Tetraodontidae. Distribution: Red Sea; northwestern Indian Ocean: Gulf of Aden. Habitat: marine.