Astyanax aeneus, the banded tetra, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This fish is found in southern Central America and northern South America. It can be found in a variety of environments, including lakes, rivers, ponds, and slightly brackish locales like lagoons. As well as a varied habitat, it has a varied omnivorous diet: algae, seeds, leaves, insects, and fish fry appear to be the most common.

The IUCN considers A. aeneus a species of least concern, given its widespread habitat and hardy nature. Various threats throughout its range appear to have little impact on overall survivability. Despite a comparatively-short reproductive period, individuals also demonstrate high fecundity, which assists in maintaining a stable population.

...