Specimen Information

Oreochromis aureus
Oreochromis aureus
(Blue Tilapia)

Specimen ID1655345
Common NameBlue Tilapia
LocalityBig Bend National Park, spring-fed wetland pond ('Beaver Pond') adjacent to Rio Grande Village Campground
Mapping AccuracyAccurate
HUC8 NameBig Bend
HUC8 Number13040205
HUC10 NameHeath Creek-Rio Grande
HUC10 Number1304020524
HUC12 NameErnst Ridge-Rio Grande
HUC12 Number130402052404
Collection Day23
Collection Month2
Collection Year2018
Year AccuracyActual
Potential Pathwayreleased | escaped captivity | dispersed
Comments"At approximately 1030 h I observed 50-75 juvenile blue tilapia foraging within vegetation of a spring-fed wetland pond located adjacent to the Rio Grande Village Campground of the Big Bend National Park. Edwards (2009) documented the establishment of blue tilapia in this wetland pond in 2009 and invasion of blue tilapia into the pond in the 1990s." Edwards, R. 2009. Monitoring of federally endangered Big Bend mosquitofish, Gambusia gaigei. 2009 Investigator's Annual Report, National Park Service.
Record TypeNAS sighting report
Number Collected50-75
Oreochromis aureus
Oreochromis aureus
Oreochromis aureus
Oreochromis aureus


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. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/24/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

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