Involvement of the American Fisheries Society with exotic species; Colonization theory relative to introduced populations; International transfers of inland fish species; Distribution of exotic fishes in the continental United States; Introduction to exotic fishes into Canada; Distribution and known impacts of exotic fishes in Mexico; Exotic fishes in Hawaii and other islands of Oceania; Exotic fishes in Puerto Rico; Introductions of exotic fishes in Australia; Exotic fishes: the New Zealand experience; Bacteria, parasites, and viruses of aquarium fish and their shipping waters; Some parasites of exotic fishes; Exotic fishes in warmwater aquaculture; Control of aquatic weeds with exotic fishes; Exotic fishes and sport fishing; Known impacts of exotic fishes in the continental United States; Toward the development of an environmental ethic for exotic fishes; A suggested protocol for evaluating proposed exotic fish introductions in the United States.