In ichthyology, the genus Oncorhynchus includes the world's 10 species of trout and salmon. To the everlasting thankfulness of America's 35 million anglers, North America is home to nine species of these elusive and delicious fish (five salmon and four trout). Behnke (Native Trout of Western North America), professor emeritus of fishery and wildlife biology at Colorado State University, has brought his more than 50 years of studying, and fishing for salmon and trout, to wonderful effect. He provides readers with an authoritative compendium of the evolution, biology, ecology, habitats and behaviors of these prized game fish. A capsule legend that includes scientific name, other common names, habitat, size, life span and diet accompanies each entry, amazingly illustrated by Tomelleri (Fishes of the Central United States), whose fish seem to shimmer on the pages. Habitat maps, which include coastal waters, rivers, streams and lakes, are detailed and specific enough to be taken on fishing excursions. The book includes a good deal of fishing lore, as in the notations that describe the best flies, bait and lures for specific types of fish and locales. Behnke also ponders some of the more philosophical aspects of ecology and human responsibility for the environment. Along with full and clearly written scientific explanations, statistics and analysis, the author provides anecdotal and historical details that make this not just a field guide, but a fascinating read for those interested in the natural world. For the last word on trout and salmon, look no further than this guide. (Oct.)
