| Anostomus longus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Anostomidae |
| Genus: | Anostomus |
| Species: | A. longus |
| Binomial name | |
| Anostomus longus Géry, 1961 | |
Anostomus longus is small species of freshwater ray-finned fish belonging to the family Anostomidae, the toothed headstanders. [1] [2] [3] It is only known from the upper Amazon of Peru. [1] [2] It has been collected in a slow moving river. [1]