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

<==o Lethrinidae (keisariahvenet; emperors, emperor breams) [N: 5/39] [FB: 5/37]
   |-- Gnathodentex aureolineatus (Lacépède, 1802) (Striped large-eye bream)
   |--o Gymnocranius ()? [N: 8] [FB: 7]
   |  |-- G. audleyi Ogilby, 1916 (Collared large-eye bream)
   |  |-- G. elongatus Senta, 1973 (Forktail large-eye bream)
   |  |-- G. euanus (Günther, 1879) (Japanese large-eye bream)
   |  |-- G. frenatus Bleeker, 1873 (Yellowsnout large-eye bream)
   |  |-- G. grandoculis (Valenciennes, 1830) (Blue-lined large-eye bream)
   |  |-- G. griseus (Temminck & Schlegel, 1843) (Grey large-eye bream)
   |  `-- G. microdon (Bleeker, 1851) (Blue-spotted large-eye bream)
   |-- Monotaxis grandoculis (Forsskål, 1775) (Humpnose big-eye bream)
   |-- Wattsia mossambica (Smith, 1957) (Mozambique large-eye bream)
   `--o Lethrinus ()? [N: 28] [FB: 27]
      |-- L. amboinensis Bleeker, 1854 (Ambon emperor)
      |-- L. atkinsoni Seale, 1910 (Pacific yellowtail emperor)
      |-- L. atlanticus Valenciennes, 1830 (Atlantic emperor)
      |-- L. borbonicus Valenciennes, 1830 (Snubnose emperor)
      |-- L. conchyliatus (Smith, 1959) (Redaxil emperor)
      |-- L. crocineus Smith, 1959 (Yellowtail emperor)
      |-- L. enigmaticus Smith, 1959 (Blackeye emperor)
      |-- L. erythracanthus Valenciennes, 1830 (Orange-spotted emperor)
      |-- L. erythropterus Valenciennes, 1830 (Longfin emperor)
      |-- L. genivittatus Valenciennes, 1830 (Longspine emperor)
      |-- L. haematopterus Temminck & Schlegel, 1844 (Chinese emperor)
      |-- L. harak (Forsskål, 1775) (Thumbprint emperor)
      |-- L. laticaudis Alleyne & Macleay, 1877 (Grass emperor)
      |-- L. lentjan (Lacépède, 1802) (Pink ear emperor)
      |-- L. mahsena (Forsskål, 1775) (Sky emperor)
      |-- L. microdon Valenciennes, 1830 (Smalltooth emperor)
      |-- L. miniatus (Forster, 1801) (Trumpet emperor)
      |-- L. nebulosus (Forsskål, 1775) (Spangled emperor)
      |-- L. obsoletus (Forsskål, 1775) (Orange-striped emperor)
      |-- L. olivaceus Valenciennes, 1830 (Longface emperor)
      |-- L. ornatus Valenciennes, 1830 (Ornate emperor)
      |-- L. punctulatus Macleay, 1878 (Australian emperor)
      |-- L. reticulatus Valenciennes, 1830 (Red snout emperor)
      |-- L. rubrioperculatus Sato, 1978 (Spotcheek emperor)
      |-- L. semicinctus Valenciennes, 1830 (Black blotch emperor)
      |-- L. variegatus Valenciennes, 1830 (Slender emperor)
      `-- L. xanthochilus Klunzinger, 1870 (Yellowlip emperor)

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