grisea, Muraenophis Lacepède [B. G. E.] (ex Commerson) 1803:629, 642, Pl. 19 (fig. 3) [Histoire naturelle des poissons (Lacepède) v. 5; ref. 4930] No locality stated [Madagascar]. No types known. Type catalog: Bauchot et al. 1993:126 [ref. 20810], Böhlke & Smith 2002:114 [ref. 26380]. Neotype designation by Fricke 1999:57 [ref. 24106] is invalid; see Fricke 2000:639 [ref. 24537]. Based on description and drawing in manuscript by Commerson (Philibert Commerson, 1727-1773, French explorer and naturalist). •Valid as Siderea grisea (Lacepède 1803) -- (Dor 1984:29 [ref. 29757], Castle & McCosker 1986:174 [ref. 5645], Goren & Dor 1994:7 [ref. 25356], Quéro & Saldanha 1995:68 [ref. 22017], Randall & Golani 1995:870 [ref. 21744], Randall 1995:58 [ref. 22896], Fricke 1999:56 [ref. 24106], Caratini & Soriano 2011:60 [ref. 39915]). •Valid as Gymnothorax griseus (Lacepède 1803) -- (Winterbottom et al. 1989:9 [ref. 13251], Böhlke & Randall 1999:551 [ref. 24552], Böhlke & Smith 2002:114 [ref. 26380], Manilo & Bogorodsky 2003:S95 [ref. 27377], Heemstra et al. 2004:3316 [ref. 27945], Heemstra & Heemstra 2004:104 [ref. 28072], Fricke et al. 2009:16 [ref. 30213], Smith 2012:16 [ref. 32155], Fricke et al. 2013:251 [ref. 32706], Fricke et al. 2018:36 [ref. 35805], Golani & Fricke 2018:21 [ref. 36273], Arndt & Fricke 2019:23 [ref. 36883], Dalleau-Coudert et al. 2019:112 [ref. 40104], Zajonz et al. 2019:62 [ref. 36871], Smith et al. 2019:29 [ref. 37159], Eudeline 2022:139 [ref. 39191], Smith & Böhlke 2022:53 [ref. 39681], Fricke et al. 2024:80 [ref. 41255]). Current status: Valid as Gymnothorax griseus (Lacepède 1803). 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.