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| NAS - Nonindigenous Aquatic Species |
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Common Name: granulated catfish
Taxonomy: available through 
Identification: Distinguishing characteristics of the genus Pterodoras were given by Higuchi (1992). A few distinguishing characteristics and a key to doradid genera were given by Burgess (1989), although that key should be considered somewhat suspect. The species was also included in illustrations and identification keys of Eigenmann (1925). For photographs of species see Goulding (1980), Sands (1984, incorrectly spelled as Pterydoras granulosus), and Burgess (1989).
Size: 70 cm.
Native Range:
Tropical America. La Plata and Amazon basins of South America.
Nonindigenous Occurrences: A single specimen (55 cm SL) was found dead in a canal north of Brooker Creek, near Lake Tarpon in Pinellas County, Florida, in early 1977 (Courtenay and Hensley 1979a; museum specimen).
Means of Introduction: This fish was probably an aquarium release.
Status: Reported from Florida.
Impact of Introduction: Unknown.
Remarks: The Pinellas County, Florida, record is likely the basis for inclusion
of this species in several published lists of nonestablished,
nonindigenous fishes (e.g., Courtenay and Hensley 1980; Courtenay et
al. 1984, 1986; Courtenay and Stauffer 1990; Courtenay et al. 1991;
Robins et al. 1991b).
Voucher specimens: Florida (FDNR 11967).
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.
Courtenay, W. R., Jr., and D. A. Hensley. 1979a. Survey of introduced non-native fishes. Phase I Report. Introduced exotic fishes in North America: status 1979. Report Submitted to National Fishery Research Laboratory, U.S. Fish and Wildlife Service, Gainesville, FL.
Courtenay, W. R., Jr., and D. A. Hensley. 1980. Special problems associated with monitoring exotic species. Pages 281-307 in C. H. Hocutt, and J. R. Stauffer, Jr. Biological Monitoring of Fish. Lexington Books, Lexington, MA. D.C. Heath and Company.
Courtenay, W. R., Jr., and J. R. Stauffer, Jr.. 1990. The introduced fish problem and the aquarium fish industry. Journal of the World Aquaculture Society 21(3):145-159.
Courtenay, W. R., Jr., D. A. Hensley, J. N. Taylor, and J. A. McCann. 1984. Distribution of exotic fishes in the continental United States. Pages 41-77 in W. R. Courtenay, Jr., and J. R. Stauffer, Jr., editors. Distribution, biology and management of exotic fishes. Johns Hopkins University Press, Baltimore, MD.
Courtenay, W. R., Jr., D. A. Hensley, J. N. Taylor, and J. A. McCann. 1986. Distribution of exotic fishes in North America. Pages 675-698 in C. H. Hocutt, and E. O. Wiley, editors. The zoogeography of North American freshwater fishes. John Wiley and Sons, New York, NY.
Courtenay, W. R., Jr., D. P. Jennings, and J. D. Williams. 1991. Appendix 2: exotic fishes. Pages 97-107 in Robins, C. R., R. M. Bailey, C. E. Bond, J. R. Brooker, E. A. Lachner, R. N. Lea, and W. B. Scott. Common and scientific names of fishes from the United States and Canada, 5th edition. American Fisheries Society Special Publication 20. American Fisheries Society, Bethesda, MD.
Goulding, M. 1980. Fishes of the forest: explorations in Amazonian natural history. University of California Press, Los Angeles, CA.
Robins, C. R., R. M. Bailey, C. E. Bond, J. R. Brooker, E. A. Lachner, R. N. Lea, and W. B. Scott. 1991b. World fishes important to North Americans exclusive of species from the continental waters of the United States and Canada. American Fisheries Society Special Publication 21. American Fisheries Society, Bethesda, MD. 243 pp.
Other Resources:
Species Summary for Pterodoras granulosus granulated catfish (FishBase)
FishBase Fact Sheet
Author: Leo Nico
Revision Date: 6/2/2004 Citation for this information:
Leo Nico. 2009. Pterodoras granulosus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=666> Revision Date: 6/2/2004
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