Třída: Actinopterygii - paprskoploutví
Řád: Siluriformes - sumci
Čeleď: Loricariidae - krunýřovcovití

Typový druh: Hypoptopoma thoracatum Günther, 1868

Reference: Günther A. 1868. Diagnoses of some new freshwater fishes from Surinam and Brazil, in the collection of the British Museum. Ann. Mag. Nat. Hist. (Ser. 4) v. 1 (no. 6). 475-481.

Přehled druhů

• Hypoptopoma bilobatum Cope, 1870
  Krunýřníček dvoulaločný
  Cope, E. D. 1870. Contribution to the ichthyology of the Marañon. Proc. Am. Philos. Soc. v. 11: 559-570.
• Hypoptopoma guianense Boeseman, 1974
  Krunýřníček nickerienský
  Boeseman, M. 1974. On two Surinam species of Hypoptopomatinae, both new to science (Loricariidae, Siluriformes, Ostariophysi). Proc. K. Ned. Akad. Wet. (Ser. C Biol. Med. Sci.) v. 77 (no. 3): 251-271.
• Hypoptopoma gulare Cope, 1878
  Krunýřníček žravý
  Cope, E. D. 1878. Synopsis of the fishes of the Peruvian Amazon, obtained by Professor Orton during his expeditions of 1873 and 1877. Proc. Am. Philos. Soc. v. 17 (no. 101): 673-701.
• Hypoptopoma joberti (Vaillant, 1880)
  Krunýřníček Jobertův
  Vaillant, L. L. 1880. Note sur le genre Otocinclus et description d'une espèce nouvelle. Bull. Soc. Philomath. Paris (Ser. 7) v. 4: 145-148.
• Hypoptopoma psilogaster Fowler, 1915
  Krunýřníček peruánský
  Fowler, H. W. 1915. Notes on nematognathous fishes. Proc. Acad. Nat. Sci. Phila. v. 67: 203-243.
• Hypoptopoma steindachneri Boulenger, 1895
  Krunýřníček Steindachnerův
  Boulenger, G. A. 1895. [Abstract of a report on a large collection of fishes formed by Dr. C. Ternetz in Matto Grosso and Paraguay, with descriptions of new species.]. Proc. Zool. Soc. Lond. 1895 (pt 3): 523-529.
• Hypoptopoma thoracatum Günther, 1868
  Krunýřníček xeberoský
  Günther, A. 1868. Diagnoses of some new freshwater fishes from Surinam and Brazil, in the collection of the British Museum. Ann. Mag. Nat. Hist. (Ser. 4) v. 1 (no. 6): 475-481.

Statistické údaje

Počet druhů: 7