[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 Osmeriformes Regan, 1913 - freshwater smelts
         Family Bathylagidae Gill, 1884 - deepsea smelts
           1 Genus Bathylagichthys Kobyliansky, 1986
           2 Genus Bathylagus Günther, 1878
           3 Genus Dolicholagus Kobyliansky, 1986
           4 Genus Melanolagus Kobyliansky, 1986