Aquatic Nuisance Species Task Force (ANSTF) - An intergovernmental organization dedicated to preventing and controlling aquatic nuisance species, and implementing the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990. Nonindigenous Aquatic Species - A central repository for spatially referenced biogeographic accounts of nonindigenous aquatic species in the USA. Marine Bioinvader's Site - The Exotic Species pages give an introduction to the problems associated with these organisms, the pathways for their introduction, and an overview of treatment and control methods. Southwest NativeTrout - Southwest trout have been decimated by a century of livestock grazing, water diversions, logging, road construction, dam-building, and stocking of exotic trout. Exotic Species and their Effects on the Great Lakes - Exotics- learn about nonindigenous creatures that invade the Great Lakes Region of the U.S. - Don't let them hitch a ride with you! Exotic Species in the Great Lakes Basin - From the Great Lakes Information Network, a comprehensive collection of research publications and education materials covering aquatic nuisance species. Invading Species - Introduction to the topic from the Ontario Federation of Anglers and Hunters. Western Regional Panel on Aquatic Nuisance Species - Information on aquatic nuisance species in the western U.S. including prevention, control, and management. Database on Introduction of Aquatic Species (DIAS) - The database includes records of species introduced or transferred from one country to another and does not consider movements of species inside the same country. Aquatic Nuisance Species Impacts - Provides details of non-indigenous species that occur in inland, estuarine and marine waters in the US and that threaten ecological processes or natural resources. Baltic Sea Alien Species Database - Aims to provide a reference system on alien species, to update the information on the Baltic Sea alien species and to encourage the exchange of data among different geographical regions. National Aquatic Invasive Species Database - Library of publications related to the biology, spread, impact, and control of aquatic nuisance, non-indigenous and invasive species.