After Nelson, 1994, and Albert & Crampton, 2005, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o Apteronotidae (Ghost knifefishes; pyrstöveitsikalat ) [N: 10/27] [FB: 11/44]
   |--+--+-- Orthosternarchus tamandua (Boulenger, 1898) Ellis, 1912
   |  |  `-- Sternarchorhamphus Mülleri (Steindachner, 1881) Castelnau, 1855
   |  `--+-- Platyurosternarchus macrostomus (Günther, 1870) Mago-Leccia, 1994
   |     `--o Sternarchorhynchus Eigenmann, 1905 [7]
   |        |-- S. britskii Campos-da-Paz, 2000
   |        |-- S. curvirostris (Boulenger, 1887)
   |        |-- S. mesensis Campos-da-Paz, 2000
   |        |-- S. mormyrus (Steindachner, 1868)
   |        |-- S. oxyrhynchus (Müller & Troschel, 1849)
   |        `-- S. roseni Mago-Leccia, 1994 Rosen knifefish
   `--+-- Parapteronotus hasemani (Ellis, 1913) Albert, 2001 [Apteronotus anas]
      `--+--+--o Megadontognathus Mago-Leccia, 1994 [2]
         |  |  |-- M. cuyuniense Mago-Leccia, 1994
         |  |  `-- M. kaitukaensis Campos-da-paz, 1999
         |  `--o Apteronodus Lacépède, 1800 sensu stricto [incl. Ubidia] [16]
         |     |-- A. albifrons (Linnaeus, 1766) (Black ghost)
         |     |-- A. apurensis Fernández-Yépez, 1968
         |     |-- A. brasiliensis (Reinhardt, 1852)
         |     |-- A. cuchillejo (Schultz, 1949)
         |     |-- A. cuchillo Schultz, 1949
         |     |-- A. ellisi (Alonso de Arámburu, 1957)
         |     |-- A. jurubidae (Fowler, 1944)
         |     |-- A. leptorhynchus (Ellis, 1912)
         |     |-- A. macrolepis (Steindachner, 1881)
         |     |-- A. macrostomus (Fowler, 1943)
         |     |-- A. (Ubidia) magdalenensis (Miles, 1945)
         |     |-- A. marauna (Triques, 1998)
         |     |-- A. mariae (Eigenmann & Fisher, 1914)
         |     |-- A. rostratus (Meek & Hildebrand, 1913)
         |     `-- A. spurrellii (Regan, 1914)
         `--+--+-- Gymnotiformes genus indet. A
            |  `--+--o Magosternarchus Lundberg, Cox, Fernandes & Albert, 1996 [2]
            |     |  |-- M. duccis Lundberg, Cox, Fernandes & Albert, 1996
            |     |  `-- M. raptor Lundberg, Cox, Fernandes & Albert, 1996
            |     `--o Sternarchella Eigenmann, 1905 [5]
            |        |-- S. curvioperculata Godoy, 1968
            |        |-- S. orthos Mago-Leccia, 1994
            |        |-- S. schotti (Steindachner, 1868)
            |        |-- S. sima Starks, 1913
            |        `-- S. terminalis (Eigenmann & Allen, 1942)
            `--+--o “Apteronodus”
               |  `-- “A.” bonapartii (Castelnau, 1855)
               `--+--o Compsaraia Albert, 2001
                  |  |-- C. sp.
                  |  `-- C. compsa (Mago-Leccia, 1994)
                  `--+--o Porotergus Ellis, 1912 [2]
                     |  |-- P. gimbeli Ellis, 1912
                     |  `-- P. gymnotus Ellis, 1912
                     `--+--o Sternarchogiton Eigenmann & Ward, 1905 [2]
                        |  |-- S. nattereri (Steindachner, 1868) [Oedemognathus exodon]
                        |  `-- S. porcinum Eigenmann & Allen, 1942
                        `--o Adontosternarchus Ellis, 1912 [4]
                           |-- A. balaenops (Cope, 1878)
                           |-- A. clarkae Mago-Leccia, Lundberg & Baskin, 1985
                           |-- A. devenanzii Mago-Leccia, Lundberg & Baskin, 1985
                           `-- A. sachsi (Peters, 1877)

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