Searching for a comprehensive fish information resource? The Catalog of Fishes from the California Academy of Sciences contains approximately 56,000 described species and subspecies of fishes making it "the first treatment of all described fishes since Linnaeus in 1758." The Catalog also contains approximately 21,700 references, and 10,600 genera and subgenera. The website includes an Introduction...

FishBase on the Web offers a free "relational database with information to cater to different professionals such as research scientists, fisheries managers, zoologists and many more." Developed at the International Center for Living Aquatic Resources Management together with the Food and Agriculture Organization of the United Nations and many other partners, FishBase is the online source for "all...

The North American Native Fishes Association (NANFA) works "to increase and disseminate knowledge about North America's native fishes and their habitats among aquarium hobbyists, biologists, fish and wildlife officials, anglers, educators, students, and others, through publications, electronic media, regional and national meetings, and other means." The NANFA website features a Checklist of...