Global InformationAstyanax caucanus information
| Astyanax caucanus | |
|---|---|
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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. caucanus
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| Binomial name | |
| Astyanax caucanus Steindachner, 1879
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Astyanax caucanus is a small species of freshwater fish only found in Colombia. While little research exists regarding its ecological habits, such as diet and mating practices, its environment preferences are known to include marshy lowlands, and it easily lives in sympatry with various other fish species in the Cauca and Magdalena river basins. It is not known to share a habitat with any other species of Astyanax, but has a noted phyletic relationship to a group of congeners including Astyanax filiferus, Astyanax stilbe, and Astyanax magdalenae.
Congener Astyanax atratoensis has been noted to bear a strong visual resemblance to A. caucanus, and researchers as early as 1908 were commenting on a possible relationship. It is unknown if this remains the case, as A. atratoensis and A. caucanus no longer share a subgenus; A. caucanus has been considered a member of subgenus Zygogaster since its description, and A. atratoensis has been moved from Zygogaster to Poecilurichthys by recent research.
- ^ Villa-Navarro, F.; Sanchez-Duarte, P. (2016). "Astyanax caucanus". IUCN Red List of Threatened Species. 2016: e.T49829978A61473673. doi:10.2305/IUCN.UK.2016-1.RLTS.T49829978A61473673.en. Retrieved 24 August 2023.