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During our collective fifty years of teaching ichthyology and fishery biology, we have used many excellent textbooks but have had to devise our own laboratory exercises and associated handouts. It is no wonder, then, that more teaching assistants than we care to remember have suggested that we gather this array of teaching material and organize it into a manual. Following this suggestion, we realized, might allow the copy machine to cool down and would also obviate endless collection and distribution. In addition, students would have all their materials in one place, and the more ambitious of these class participants could prepare ahead. This book is comprehensive, geographically balanced field and laboratory manual for courses in marine biology, ichthyology, and fishery sciences. All encompassing! No other guide or manual offers you such complete hands-on coverage of : • Morphology • Identification and Classification • Physiological Adaptations • Natural History Broad taxonomic and geographic coverage! Here is a guide and manual you can use anywhere in the world. It applies to a variety of fishes and geographical areas: • Jawless, Cartilaginous, and Bony • Fresh-and Saltwater • Temperate and Tropical • Inshore and Offshore Brief Contents: Section I-Morphology of Fishes: Form and Function – Basic Anatomy: External • Basic Anatomy: Internal • Osteology of Bony Fishes • Muscular Morphology of Bony Fishes • Exercises in Functional Morphology. Section II-Taxonomic Characters in Identification, Variation, and Classification – Finding and Measuring Characters • Key Characters and Identification of Taxa • Character Trends and Morphological Variation • Shared Characters and Classification. Section III-Natural History of Fishes – Habitats: Collecting and Survey Techniques • Care and Handling of Specimens • Age and Growth • Feeding • Reproduction • Parasites • Anomalous Fishes.