Editing Common rudd (section)

== Invasive species  and artificial introduction ==
It has been artificially introduced to Ireland, United States, Morocco, Madagascar, Norway, Tunisia, New Zealand, Canada, and Spain.<ref>{{Cite web|title=Rudd (Scardinius erythrophthalmus) introduced to the Iberian peninsula: Feeding ecology in Lake Banyoles {{!}} Request PDF|url=https://www.researchgate.net/publication/240994686|access-date=2021-05-18|website=ResearchGate|language=en}}</ref>

Rudd have been found in the US states of [[Alabama]], [[Arkansas]], [[Colorado]], [[Connecticut]], [[Georgia (country)|Georgia]], [[Illinois]], [[Indiana]], [[Kansas]], [[Massachusetts]], [[Maine]], [[Missouri]], [[Nebraska]], [[New Jersey]], [[New York (state)|New York]], [[Oklahoma]], [[Pennsylvania]], [[South Dakota]], [[Texas]], [[Vermont]], [[Virginia]], [[West Virginia]], and [[Wisconsin]].<ref name="auto">{{Cite web |url=https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=648 |title=Rudd (Scardinius erythrophthalmus) - FactSheet |access-date=2017-08-28 |archive-url=https://web.archive.org/web/20161225205933/https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=648 |archive-date=2016-12-25 |url-status=dead }}</ref>  This list may not include all states containing an introduced population of rudd.<ref>{{Cite web|url=https://www.fws.gov/fisheries/ans/erss/highrisk/Scardinius-erythrophthalmus-ERSS-revision-June-2015.pdf|title=Rudd (Scardinius erythrophthalmus) Ecological Risk Screening Summary|access-date=Mar 28, 2023}}</ref><ref>{{Cite web|url=https://www.cabi.org/isc/datasheet/65689|title=Invasive Species Compendium- Detailed coverage of invasive species threatening livelihoods and the environment worldwide|access-date=Mar 28, 2023}}</ref>

Rudd were illegally introduced into New Zealand in the 1960s and have been actively spread around the country. They have the potential to irreversibly damage indigenous ecosystems.<ref>{{cite web|url=http://www.conservation.govt.nz/upload/documents/science-and-technical/PF08chadderton1.pdf|title=Management of invasive freshwater fish: striking the right balance!|last=Chadderton|first=W. Lindsay|publisher=Department of Conservation|access-date=10 May 2010|location=Hamilton, NZ|archive-url=https://web.archive.org/web/20120302004722/http://www.conservation.govt.nz/upload/documents/science-and-technical/PF08chadderton1.pdf|archive-date=2012-03-02|url-status=dead}}</ref>