Anostomidae

Taxobox
name = Anostomidae

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image_width = 240px
image_caption = "Leporinus obtusidens", a species of the Paraná River basin.
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Characiformes
superfamilia = Anostomoidea
familia = Anostomidae
subdivision_ranks = Genera
subdivision = "Abramites" - Headstander and highbacked headstander "Anostomoides" "Anostomus" "Gnathodolus" "Laemolyta" "Leporellus" "Leporinus" "Petulanos" "Pseudanos" "Rhytiodus" "Sartor" "Schizodon" "Synaptolaemus"

The Anostomidae are a family of fish that belong to order Characiformes (which are ray-finned fish). They are primarily found from southern Central America to South America. They usually have elongated bodies and small, apical to upturned mouths. Headstanders may orient themselves from 45 up to 90 degrees at times. This family contains twelve genera and at least 137 species.

This family is closely related to Chilodontidae.