After Carroll, 1988, and Nelson, 1994, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o Bythitidae (viviparous brotulas) [FB: 33/96]
   |?- Beaglichthys macrophthalmus Machida, 1993
   |--o Bellottia [2]
   |  |-- B. apoda Giglioli, 1883
   |  `-- B. armiger (Smith & Radcliffe, 1913)
   |?- Brosmodorsalis persicinus Paulin & Roberts, 1989 (Pink brotula)
   |?- Brosmolus longicaudis Machida, 1993
   |?- Brosmophyciops pautzkei Schultz, 1960 (Slimy cuskeel)
   |?-o Brotulina [2]
   |  |-- B. erythrea (Fowler, 1946)
   |  `-- B. fusca Fowler, 1946
   |?- Diancistrus longifilis Ogilby, 1899
   |?-o Dipulus [2]
   |  |-- D. caecus Waite, 1905
   |  `-- D. norfolkanus Machida, 1993
   |?- Fiordichthys slartibartfasti Paulin, 1995
   |?- Grammonoides opisthodon (Smith, 1934) (Bighead brotula)
   |?-o Grammonus [6]
   |  |-- G. ater (Risso, 1810)
   |  |-- G. claudei (Torre & Huerta, 1930) (Reef-cave brotula)
   |  |-- G. diagrammus (Heller & Snodgrass, 1903) (Purple brotula)
   |  |-- G. longhursti (Cohen, 1964)
   |  |-- G. robustus Smith & Radcliffe, 1913
   |  `-- G. waikiki (Cohen, 1964)
   |?- Hastatobythites arafurensis Machida, 1997
   |?-o Hephthocara [2]
   |  |-- H. crassiceps Smith & Radcliffe, 1913
   |  `-- H. simum Alcock, 1892
   |?-o Microbrotula [2]
   |  |-- M. randalli Cohen & Wourms, 1976
   |  `-- M. rubra Gosline, 1953
   |?-o Monothrix [2]
   |  |-- M. mizolepis (Günther, 1867)
   |  `-- M. polylepis Ogilby, 1897
   |?- Parabrosmolus novaeguineae Machida, 1996
   |?-o Pseudonus [3]
   |  |-- P. acutus Garman, 1899
   |  |-- P. platycephalus (Smith & Radcliffe, 1913)
   |  `-- P. squamiceps (Lloyd, 1907)
   |?-o Thalassobathia [2]
   |  |-- T. nelsoni Lee, 1974
   |  `-- T. pelagica Cohen, 1963
   |-- Bythitinae
   `-- Brosmophycinae

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