Třída: Actinopterygii - paprskoploutví
Řád: Tetraodontiformes - čtverzubci
Čeleď: Triacanthodidae - trojtrnovití

Typový druh: Triacanthus anomalus Temminck & Schlegel, 1850

Reference: Bleeker P. 1858. Vierde bijdrage tot de kennis der ichthyologische fauna van Japan. Acta Soc. Sci. Indo-Neerl. v. 3 (art. 10). 1-46.

Přehled druhů

• Triacanthodes anomalus (Temminck & Schlegel, 1850)
  Temminck, C. J. & H. Schlegel. 1850. Pisces, Fauna Japonica Last part: 270-324.
• Triacanthodes ethiops Alcock, 1894
  Alcock, A. W. 1894. Natural history notes from H. M. Indian marine survey steamer 'Investigator,'... Series II., No. 11. An account of a recent collection of bathybial fishes from the Bay of Bengal and from the Laccadive Sea. J. Asiatic Soc. Bengal v. 63 (pt 2): 115-137, Pls. 6-7.
• Triacanthodes indicus Matsuura, 1982
  Matsuura, K. 1982. A new triacanthodid fish, Triacanthodes indicus from the Indian Ocean. Jpn. J. Ichthyol. v. 28 (no. 4): 385-392.
• Triacanthodes intermedius Matsuura & Fourmanoir, 1984
  Matsuura, K. & P. Fourmanoir. 1984. A new triacanthodid fish, Triacanthodes intermedius, from New Caledonia. Bull. Natl. Sci. Mus. (Tokyo) v. 10 (no. 1): 31-35.

Statistické údaje

Počet druhů: 4