| Astyanax argyrimarginatus | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Characidae |
| Genus: | Astyanax |
| Species: | A. argyrimarginatus
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| Binomial name | |
| Astyanax argyrimarginatus Garutti, 1999
| |
Astyanax argyrimarginatus is a small species of freshwater fish native to various river basins in Brazil. Originally thought to be restricted to the Tocantins-Araguaia river system, a study in 2012 expanded its range to include the Rio Xingu, as well. Specific biotope preferences are unknown, but it is mostly collected from clearwater streams in fairly good health. Its relative abundance and presence in some protected locales means that it is not endangered.
This species is a part of a complex centered around congener Astyanax bimaculatus. Visually, it bears similarities to other species also within the complex, including reddish fins and a dark humeral spot, but its most distinguishing feature is a black lateral stripe with bright-silver edges. This stripe is the origin of its scientific name, which means "silver border".[2]
- ^ Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Astyanax argyrimarginatus". IUCN Red List of Threatened Species (in Portuguese). 2022: e.T134691486A134691493. doi:10.2305/IUCN.UK.2022-1.RLTS.T134691486A134691493.pt. Retrieved 24 April 2023.
- ^ Cite error: The named reference
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