Leporinus striatus

Brevidens is a monospecific genus of freshwater ray-finned fish belonging to the family Anostomidae, the toothed headstanders. The only species in this genus is Brevidens striatus, a fish found in tropical South America.

==Taxonomy== Brevidens was first proposed as a monospecific genus in 2025 by the Brazilian ichthyologists José Luís O. Birindelli, Brian L. Sidlauskas and Bruno F. Melo, with Leporinus striatus as its only species. Leporinus striatus was first formally described in 1858 by Rudolf Kner, with its type locality given as Irisanga and Caicara in Mato Grosso, Brazil. This species was originally classified in the genus Leporinus, but Birindelli, Sidlauskas and Melo found that this taxon was paraphyletic and, among other taxonomic changes, reclassified L. striatus in the new genus Brevidens. Brevidens is classified in the subfamily Leporininae of the family Anostomidae, the headstanders, in the suborder Characoidei of the order Characiformes.