geometrica, Muraena Rüppell [W. P. E. S.] 1830:118, Pl. 30 (fig. 1) [Atlas zu der Reise im nördlichen Africa. Fische des Rothen Meeres; ref. 3843] Massawa, Eritrea, Red Sea. Holotype (unique): SMF 130. Type catalog: Böhlke & Smith 2002:112-113 [ref. 26380]. •Synonym of Siderea grisea (Lacepède 1803) -- (Dor 1984:30 [ref. 29757], Randall & Golani 1995:870 [ref. 21744]). •Synonym of Gymnothorax griseus (Lacepède 1803) -- (Böhlke & Smith 2002:113 [ref. 26380], Smith 2012:16 [ref. 32155], Golani & Fricke 2018:21 [ref. 36273], Smith et al. 2019:29 [ref. 37159]). •Valid as Gymnothorax geometricus (Rüppell 1830) -- (Golani & Fricke 2026:22 [ref. 42831]). Current status: Valid as Gymnothorax geometricus (Rüppell 1830). Muraenidae: Muraeninae. Distribution: Red Sea; western Indian Ocean: Transkei and KwaZulu-Natal (South Africa) and East Africa to Seychelles, Mayotte (France), Madagascar and Mascarenes (La Réunion, Mauritius, Rodrigues). Habitat: marine.