What is Introduced species?
[[File:Tilapia mariae.jpg|thumb|A species of Tilapia in an aquarium]] An '''introduced species''' is an [[organism|living thing]] that is not [[native (ecology)|native]] to a given place. It has been brought there by [[human]] [[wikt:activity|activities]]. People may have brought the living thing by accident or on purpose. The introduced species can cause problems when it becomes a [[Pest (biology)|pest]] in the new place. It may damage the [[ecosystem]] of the new place. This damage can be to other [[animal]]s, [[plant]]s and also human activity. One introduced species is the [[tilapia]]. It is a fish that comes from warm freshwater areas of [[Africa]], [[North America|North]] and [[South America]], [[India]] and [[Sri Lanka]].<ref name=dpi>{{Cite web |url= http://www.dpi.nsw.gov.au/fisheries/pests-diseases/freshwater-pests/species/tilapia |title= Tilapia |work= dpi.nsw.gov.au |accessdate= 14 August 2010 |archive-date= 15 July 2010 |archive-url= https://web.archive.org/web/20100715202601/http://www.dpi.nsw.gov.au/fisheries/pests-diseases/freshwater-pests/species/tilapia |url-status= dead }}</ref> It has been taken to other areas because it is good for [[fish farm]]ing, and it also is a good pet for an [[aquarium]]. When the fish is released into other parts of the world, it quickly takes over from the native fish. It can do this because it breeds quickly, eats all the available food, and eats the eggs and babies of native fish. This can cause the water to become so muddy, that the native fish cannot live. Tilapia has been listed as one of the 100 worst introduced species.<ref name=dpi/> A person owning or selling one in Australia could be fined up to [[AU$]]11,000.<ref name=dpi/> An introduced species may have a great advantage over the native species. They usually come in without the [[predators]] and [[parasites]] which they suffer in their old environment. This allows them to have young quickly. [[Fire ant]]<nowiki/>s and [[Africanized honeybee]]<nowiki/>s became invasive insects in th