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10 animals that are bad for the environment

By: Bryan Nelson on April 14, 2010, 1:05 p.m.
Common carp

Photo: Wiki Commons/CC License

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Common carp

The common carp is a true bottom feeder, uprooting and disturbing submerged vegetation. These fish are notorious for altering their environment. They are most dangerous when introduced into an alien habitat and become an invasive species. They are believed to exist in all the continental states except Maine. Natural resource agencies in the United States and Australia spend millions annually to control the common carp.