[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
       Order Gadiformes Rafinesque, 1810 - cods
         Family Macrouridae Jordan & Evermann, 1898 - grenadiers
           Genus Hymenocephalus Giglioli, 1884
             Subgenus Hymenocephalus (Hymenogadus)
               Hymenocephalus (Hymenogadus) gracilis Gilbert & Hubbs, 1920 - graceful grenadier