Global InformationAstyanax atratoensis information
| Astyanax atratoensis | |
|---|---|
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| 1907 illustration | |
Conservation status
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 Least Concern (IUCN 3.1)[1] | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Characidae |
| Genus: | Astyanax |
| Species: | A. atratoensis
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| Binomial name | |
| Astyanax atratoensis Eigenmann, 1907
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Astyanax atratoensis is a small freshwater fish that occupies the Atrato river basin in Colombia. Originally described from a tributary therein, the Truandó River, it gets its specific epithet from the region. Though it faces no imminent threats, A. atratoensis inhabits waterways with a history of severe environmental pressure in the form of anthropogenic pollution. Several restoration efforts have been undertaken in the relevant regions.
Populations exist at both low and high elevations, and have adapted to their respective surroundings; higher-elevation specimens have deeper bodies than lower-elevation ones. The color pattern, however, remains the same - largely silver, with a reflective silver lateral stripe and a small blotch of pigment on the caudal peduncle. It also has an ovoid humeral spot with vertical elongation, which can be used to differentiate it from similar congeners.
- ^ Villa-Navarro, F.; Sanchez-Duarte, P. (2016). "Astyanax atratoensis". IUCN Red List of Threatened Species. 2016: e.T49830326A61473903. doi:10.2305/IUCN.UK.2016-1.RLTS.T49830326A61473903.en. Retrieved 29 April 2023.