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| NAS - Nonindigenous Aquatic Species |
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Common Name: alligator gar
Taxonomy: available through 
Identification: Suttkus (1963); Page and Burr (1991); Etnier and Starnes (1993). Synonym Lepisosteus spatula.
Size: 3 m.
Native Range: Mississippi River basin from southwestern Ohio and southern Illinois
south to Gulf of Mexico; Gulf Coastal Plain from Econfina River,
Florida, to Veracruz, Mexico (Page and Burr 1991).
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 Alaska |
Hawaii |
Caribbean |
Interactive maps: Continental US, Alaska, Hawaii, Caribbean
Nonindigenous Occurrences: A single alligator gar measuring 145.5 cm TL and weighing 18.6 kg was reported from Clifton Court Forebay, a water storage reservoir located at the head of the California Aqueduct, near Byron in Contra Costa County, California, on 17 September 1991 (Raquel 1992).
Means of Introduction: The introduction of this individual was attributed to release by an aquarium hobbyist (Raquel 1992).
Status: Reported in California.
Impact of Introduction: Unknown.
Remarks: The California specimen was recorded in water with a temperature of 25°C and a salinity of approximately 4.5 ppt (Raquel 1992).
Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes of North America north of Mexico. The Peterson Field Guide Series, volume 42. Houghton Mifflin Company, Boston, MA.
Raquel, P. F. 1992. Record of the alligator gar (Lepisosteus spatula) from the Sacramento-San Joaquin Delta. California Fish and Game 78(4):169-171.
Other Resources:
Photo courtesy of California Academy of Sciences
Author: Pam Fuller
Revision Date: 6/30/2004 Citation for this information:
Pam Fuller. 2009. Atractosteus spatula. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=755> Revision Date: 6/30/2004
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