A beautiful and authoritative full-colour field guide to all species of freshwater fish found in Ontario. The newest volume in the best-selling ROM series. Sequel to The ROM Field Guide to Birds of Ontario by Janice Hughes (35,000+ copies sold since 2001); The ROM Field Guide to Reptiles and Amphibians of Ontario by Ross MacCulloch (7,000+ copies sold since 2002); and The ROM Field Guide to Wildflowers of Ontario by Tim Dickinson, Deborah Metsger, Jenny Bull, and Richard Dickinson (9,000+ copies sold since 2004).