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| NAS - Nonindigenous Aquatic Species |
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Common Name: green corydoras
Taxonomy: available through 
Identification: Nijssen and Isbrücker (1980) treated C. aeneus as a valid species, but also recognized a C. aeneus species complex with 25 species. The key in Gosline (1940) is useful but somewhat dated. A key to a limited number of species, including distinguishing characteristics for C. aeneus, was given by Taphorn (1989). A few distinguishing characteristics and photographs appeared in Burgess (1992). Color photographs also appeared in Burgess (1989), although it is uncertain whether these represent the true C. aeneus. In aquaria, to about 7.5 cm; in nature, rarely exceeds 4 cm SL.
Size: aquaria 7.5 cm, nature 4 cm SL
Native Range:
Tropical America. Widespread in South America including, but not limited to, Trinidad (type locality), and the Amazon and Orinoco basins; from Venezuela and the Guianas in the north to São Paulo and Mato Grosso, Brazil, in the south (Nijssen and Isbrücker 1980).
Nonindigenous Occurrences: Established in streams on Oahu and Kauai, Hawaii, since about 1984 (Devick 1991a, 1991b; Mundy 2005).
Means of Introduction: Probable aquarium release or escape.
Status: Established on Oahu and Kauai, Hawaii (Devick 1991a, 1991b).
Impact of Introduction: Unknown.
Remarks:
This species is one of the most common Corydoras in the aquarium trade (Burgess 1989).
There are no known voucher specimens, although preserved specimens are likely in the possession of Hawaii Department of Land and Natural Resources (M. Yamamoto, personal communication).
Burgess, W. E. 1989. An atlas of freshwater and marine catfishes: a preliminary survey of the Siluriformes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Devick, W. S. 1991a. Disturbances and fluctuations in the Wahiawa Reservoir ecosystem. Project F-14-R-15, Job 4, Study I. Division of Aquatic Resources, Hawaii Department of Land and Natural Resources. 21 pp.
Devick, W. S. 1991b. Patterns of introductions of aquatic organisms to Hawaiian freshwater habitats. Pages 189-213 in new directions in research, management and conservation of Hawaiian freshwater stream ecosystems. Proceedings of the 1990 symposium on freshwater stream biology and fisheries management, Division of Aquatic Resources, Hawaii Department of Land and Natural Resources.
Gosline, W. A. 1940. Revision of the neotropical catfishes of the family Callichthyidae. Stanford Ichthyological Bulletin 2(1):1-29.
Nijssen, H., and I. J. H. Isbrücker. 1980. A review of the genus Corydoras Lacépède, 1803 (Pisces, Siluriformes, Callichthyidae). Bijdragen tot de Dierkunde 50(1):190-220.
Taphorn, D. C. 1989. Los peces de la familia Callichthyidae de la cuence del Río Apure. BioLlania (Guanare, Venezuela) 6:15-50.
Yamamoto, M. - Biologist, Division of Aquatic Resources, Hawaii Department of Land and Natural Resources, Honolulu, HI.
Other Resources:
FishBase Fact Sheet
Author: Leo Nico
Revision Date: 4/11/2006 Citation for this information:
Leo Nico. 2009. Corydoras aeneus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=336> Revision Date: 4/11/2006
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