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| NAS - Nonindigenous Aquatic Species |
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Common Name: red discus
Synonyms and Other Names: pompadour fish, Heckel discus
Taxonomy: available through 
Identification: For a recent review of the genus, refer to Kullander (1986). The only other species in the genus recognized as being valid is S. aequifasciatus. Photographs of live fish were given in Axelrod et al. (1985) and Axelrod (1993). Several subspecies and color variants are found in the aquarium trade (Burgess 1981).
Size: 20 cm (Petrovicky 1988).
Native Range:
Tropical America. Amazon basin of South America including lower Negro, Trombetas, and Abacaxis rivers (Kullander 1986).
Nonindigenous Occurrences: Specimens were collected in geothermal waters on the Weisbart Swine Farm, in the Upper Rio Grande drainage in the San Luis Valley, Conejos County, Colorado, ca. 1983 (Zuckerman and Behnke 1986).
Means of Introduction: Probable escape from local fish farm (Zuckerman and Behnke 1986).
Status: Reported from Colorado.
Impact of Introduction: Unknown.
Remarks: There are no known voucher specimens.
Axelrod, H. R. 1993. The most complete colored lexicon of cichlids. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Axelrod, H. R., W. E. Burgess, N. Pronek, and J. G. Walls. 1985. Dr. Axelrod's atlas of freshwater aquarium fishes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Burgess, W. E. 1981. Studies on the family Cichlidae: 10. New information on the species of the genus Symphysodon with the description of a new subspecies of S. discus Heckel. Tropical Fish Hobbyist 29(7):32-42.
Kullander, S. O. 1986. Cichlid fishes of the Amazon River drainage of Peru. Swedish Museum of Natural History, Stockholm, Sweden. 431 pp.
Petrovicky, I. 1988. Aquarium fish of the world. Hamlyn, London, England.
Zuckerman, L. D., and R. J. Behnke. 1986. Introduced fishes in the San Luis Valley, Colorado. Pages 435-452 in R. H. Stroud, editor. Fish culture in fisheries management. Proceedings of a symposium on the role of fish culture in fisheries management at Lake Ozark, MO, March 31-April 3, 1985. American Fisheries Society, Bethesda, MD.
Other Resources:
FishBase Fact Sheet
Author: Leo Nico
Revision Date: 12/6/1999 Citation for this information:
Leo Nico. 2009. Symphysodon discus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=478> Revision Date: 12/6/1999
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