[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Ophidiiformes Regan, 1912 - cusk-eels
         Family Bythitidae Gill, 1861 - viviparous brotulas
           Genus Grammonus Gill, 1896
             Grammonus ater (Risso, 1810)