Disclaimer:

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 urolepis hornorum
(Wami Tilapia)
Fishes
Exotic
Translate this page with Google
Français Deutsch Español Português Russian Italiano Japanese

Copyright Info
Oreochromis urolepis hornorum (Trewavas, 1966)

Common name: Wami Tilapia

Taxonomy: available through www.itis.govITIS logo

Native Range:
US auto-generated map Legend USGS Logo
Alaska auto-generated map
Alaska
Hawaii auto-generated map
Hawaii
Caribbean auto-generated map
Puerto Rico &
Virgin Islands
Guam auto-generated map
Guam Saipan
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 urolepis hornorum are found here.

StateYear of earliest observationYear of last observationTotal HUCs with observations†HUCs with observations†
California198419864Salton Sea; San Gabriel; Seal Beach; Southern California Coastal
Puerto Rico196319842Culebrinas-Guanajibo; Puerto Rican Islands

Table last updated 10/4/2018

† Populations may not be currently present.


Means of Introduction: Releases in California were made for aquatic plant control and to reduce mosquito and chironomid midge populations.  The introductions were made by biologists at the University of California-Riverside, and the Southeast and Orange County Mosquito Abatement districts (Courtenay et al. 1986).

Status: Established

Remarks: Males used to hybridize with female O. mossambicus to produce hybrid males.

Other Resources:
FishBase Summary

Revision Date: 10/25/2004

Peer Review Date: 4/1/2016

Citation Information:
U.S. Geological Survey, 2019, Oreochromis urolepis hornorum (Trewavas, 1966): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=470, Revision Date: 10/25/2004, Peer Review Date: 4/1/2016, Access Date: 7/23/2019

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.

Disclaimer:

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. [2019]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/23/2019].

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 queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.