How to Know the Freshwater Fishes, first published in 1957 as part of the "How to Know" Nature Series, provides keys, descriptions, and (for nearly all species) a detailed line-drawing of all the freshwater fish found in the United States. Although some scientific names in this first edition of the book are now somewhat dated, the guide remains a valuable reference for those wanting to identify and learn more about the fish of lakes, ponds, rivers and streams.