The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Oreochromis sp.
Oreochromis sp.

Copyright Info
Oreochromis sp.

Common name: tilapia

Taxonomy: available through www.itis.govITIS logo

Native Range:
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Oreochromis sp. are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
AZ200420214Agua Fria; Lower Gila-Painted Rock Reservoir; Lower Salt; Middle Gila
CA200720215Coyote; Los Angeles; Salton Sea; San Diego; San Francisco Bay
FL2005202221Big Cypress Swamp; Caloosahatchee; Cape Canaveral; Charlotte Harbor; Crystal-Pithlachascotee; Daytona-St. Augustine; Everglades; Florida Bay-Florida Keys; Florida Southeast Coast; Hillsborough; Kissimmee; Lake Okeechobee; Lower St. Johns; Manatee; Oklawaha; Peace; Sarasota Bay; Tampa Bay; Upper St. Johns; Vero Beach; Withlacoochee
HI201320213Hawaii; Maui; Oahu
LA200920101East Central Louisiana Coastal
MN201120111Twin Cities
PR202120211Eastern Puerto Rico
SC199720212Cooper; South Carolina Coastal
TX2006202125Aransas Bay; Austin-Oyster; Austin-Travis Lakes; Big Bend; Buffalo-San Jacinto; Cowhouse; Elm Fork Trinity; Elm-Sycamore; Los Olmos; Lower Angelina; Lower Brazos; Lower Brazos-Little Brazos; Lower Colorado-Cummins; Lower Nueces; Lower Rio Grande; Middle Guadalupe; North Corpus Christi Bay; Richland; San Marcos; South Corpus Christi Bay; South Laguna Madre; Spring; Upper Nueces; Upper San Antonio; West Galveston Bay

Table last updated 9/30/2022

† Populations may not be currently present.

Other Resources:

Revision Date: 6/12/2019

Citation Information:
U.S. Geological Survey, 2022, Oreochromis sp.: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2788, Revision Date: 6/12/2019, Access Date: 10/1/2022

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [10/1/2022].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.