Hypostomus multidens Jerep, Shibatta & Zawadzki 2007

Differs from all remaining Hypostomus species with light spots on a darker backgroundby two independent characters: teeth with two symmetrical cusps (vs. two asymmetrical cusps in Hypostomus albopunctatus, Hypostomus lexi, Hypostomus margaritifer, Hypostomus meleagris, Hypostomus microstomus, Hypostomus regani, Hypostomus scaplyceps, Hypostomus strigaticeps, Hypostomus tietensis, and Hypostomus variipictus), and each mandibular ramus with 122-267 teeth, mean = 196.8 (vs. 127 teeth at most in Hypostomus ternetzi, the congener with highest tooth number in each mandibular ramus from upper rio Paraná basin) (Ref. 75037).

Occurs in large rivers, usually in low number (Ref. 75037).

Hypostomus multidens is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Paranapanema River and the Paraná River in Brazil. It is typically seen in large rivers, where it usually occurs at low population densities. The species reaches 19.8 cm (7.8 inches) SL and is believed to be a facultative air-breather. Its specific epithet, multidens, refers to the species' distinctively high number of teeth, with individuals of H. multidens possessing between 122 and 267 teeth per mandibular ramus.