Třída: Actinopterygii - paprskoploutví
Řád: Characiformes - trnobřiší
Čeleď: Hemiodontidae - polozubkovití

Typový druh: Hemiodus crenidens Müller, 1842

Reference: Müller, J. 1842. Über die Schwimmblase der Fische, mit Bezug auf einige neue Fishgattungen. Khonigl. Akad. Wiss. Berlin 1842: 202-210.

Přehled druhů

• Hemiodus amazonum (Humboldt, 1821)
  Polozubka maraňonská
  Humboldt, F. H. A. von & A. Valenciennes. 1821. Recherches sur les poissons fluviatiles de l'Amérique Équinoxiale. In: Voyage de Humboldt et Bonpland, Deuxième partie. Observations de Zoologie et d'Anatomie comparée. Paris. Humboldt & Bonpland's Voyage v. 2 (Title page 1833): 145-216, Pls. 45-52.
• Hemiodus argenteus (Pellegrin, 1908)
  Polozubka stříbřitá
  Pelegrin, J. 1908. Characinidés américains nouveaux de la collection du Muséum d'historie naturelle. Bull. Mus. Natl. Hist. Nat., 14 (7): 342-347.
• Hemiodus atranalis (Fowler, 1940)
  Polozubka černavá
  Fowler, H. W. 1940. A collection of fishes obtained by Mr. William C. Morrow in the Ucayali River Basin, Peru. Proc. Acad. Nat. Sci. Phila. v. 91 (for 1939): 219-289.
• Hemiodus goeldii Steindachner, 1908
  Polozubka Goeldova
  Steindachner, F. 1908. Über drei neue Characinen und drei Siluroiden aus dem Stromgebiete des Amazonas innerhalb Brasilien. Anz. Akad. Wiss. Wien v. 45 (no. 6): 61-69.
• Hemiodus gracilis Günther, 1864
  Polozubka útlá
  Günther, A. 1864. Catalogue of the fishes in the British Museum. Catalogue of the Physostomi, containing the families Siluridae, Characinidae, Haplochitonidae, Sternoptychidae, Scopelidae, Stomiatidae in the collection of the British Museum. Cat. Fishes v. 5: i-xxii + 1-455.
• Hemiodus huraulti (Géry, 1964)
  Polozubka Huraultova
  Géry, J. 1964. New species of hemiodin characoid fishes forming the Hemiodopsis quadrimaculatus- group. Trop. Fish Hobby. v. 13 (no. 3, Nov.): 11-15, 69-74.
• Hemiodus immaculatus (Kner, 1858)
  Polozubka bezskvrnná
  Kner, R. 1858. Beiträge zur Familie der Characinen. Sitzungsber. Akad. Wiss. Wien v. 30 (no. 13): 75-80.
• Hemiodus jatuarana Langeani, 2004
  Polozubka jatuarana
  Langeani, F. 2004. Hemiodus jatuarana, a new species of Hemiodontidae from the rio Trombetas, Amazon Basin, Brazil (Teleostei, Characiformes). Zootaxa No. 546: 1-6.
• Hemiodus microlepis Kner, 1858
  Polozubka drobnošupinná
  Kner, R. 1858. Beiträge zur Familie der Characinen. Sitzungsber. Akad. Wiss. Wien v. 30 (no. 13): 75-80.
• Hemiodus orthonops Eigenmann & Kennedy, 1903
  Polozubka podobná
  Eigenmann, C. H. & C. H. Kennedy. 1903. On a collection of fishes from Paraguay, with a synopsis of the American genera of cichlids. Proc. Acad. Nat. Sci. Phila. v. 55: 497-537.
• Hemiodus parnaguae Eigenmann & Henn, 1916
  Polozubka parnaguanská
  Eigenmann, C. H. & A. W. Henn. 1916. Description of three new species of characid fishes. Ann. Carnegie Mus. v. 10 (nos. 1/2): 87-90, Pl. 17.
• Hemiodus quadrimaculatus Pellegrin, 1908
  Polozubka čtyřskvrnná
  Pelegrin, J. 1908. Characinidés américains nouveaux de la collection du Muséum d'historie naturelle. Bull. Mus. Natl. Hist. Nat., 14 (7): 342-347.
• Hemiodus semitaeniatus Kner, 1858
  Polozubka polopruhá
  Kner, R. 1858. Beiträge zur Familie der Characinen. Sitzungsber. Akad. Wiss. Wien v. 30 (no. 13): 75-80.
• Hemiodus sterni (Géry, 1964)
  Polozubka juruenská
  Géry, J. 1964. New species of hemiodin characoid fishes forming the Hemiodopsis quadrimaculatus- group. Trop. Fish Hobby. v. 13 (no. 3, Nov.): 11-15, 69-74.
• Hemiodus ternetzi Myers, 1927
  Polozubka Ternetzova
  Myers, G. S. 1927. Descriptions of new South American fresh-water fishes collected by Dr. Carl Ternetz. Bull. Mus. Comp. Zool. v. 68 (no. 3): 107-135.
• Hemiodus thayeria Böhlke, 1955
  Polozubka rionegroská
  Böhlke, J. E. 1955. Studies on fishes of the family Characidae.--No. 10. Notes on the coloration of the species of Hemiodus, Pterohemiodus and Anisitsia, with the description of a new Hemiodus from the Rio Negro at the Brazil-Colombia border. Not. Nat. (Phila.) No. 278: 1-15.
• Hemiodus tocantinensis Langeani, 1999
  Polozubka tocantinská
  Langeani, F. 1999. New species of Hemiodus (Ostariophysi, Characiformes, Hemiodontidae) from the Rio Tocantins, Brazil, with comments on color patterns and tooth shapes within the species and genus. Copeia 1999 (no. 3): 718-722.
• Hemiodus unimaculatus (Bloch, 1794)
  Polozubka jednoskvrnná
  Bloch, M. E. 1794. Naturgeschichte der ausländischen Fische. Berlin. Naturg. Ausl. Fische v. 8: i-iv + 1-174, Pls. 361-396.
• Hemiodus vorderwinkleri (Géry, 1864)
  Polozubka leticijská
  Géry, J. 1964. New species of hemiodin characoid fishes forming the Hemiodopsis quadrimaculatus- group. Trop. Fish Hobby. v. 13 (no. 3, Nov.): 11-15, 69-74.

Statistické údaje

Počet druhů: 19