Contents Preface vii PART I. SENSORY ABILITIES 1. Olfaction 3 2. Hearing 25 3. Lateral Line 41 4. Electricity and Magnetism 57 PART 2. COGNITIVE ABILITIES 5. Learning 73 6. Telling Time 93 7. Individual Recognition 109 8. Gauging Predators and Adversaries 127 PART 3. CHOOSING ABILITIES 9. Mate Choice 143 10. Shoal Choice 169 11. Making Compromises 187 Notes 201 Subject Index 243 Species Index 249