In 1978, the U.S. Fish and Wildlife Service’s National Fisheries Research Center in Gainesville, Florida, began monitoring the status and distribution of nonindigenous fish species in U.S. waters. Originally, this information was maintained as paper files, and it was not until 1989 that these records were computerized. Williams and Jennings (1991) gave a description of the early database; Nico and Fuller (1999) provided an updated account. In 1993, the laboratory was transferred along with many other facilities to the newly created National Biological Survey (later renamed the National Biological Service). In October 1996, the National Biological Service was moved into the U.S. Geological Survey as the Biological Resources Division.