1. Phylogeny and Classification of Neotropical Fish 2. Anatomy of Teleosts and Elasmobranchs 3. The Genetic Bases of Physiological Processes in Fishes 4. Behavior and Welfare 5. Stress and Immune Systems in Fish 6. Evolution and Physiology of Electroreceptors and Electric Organs in Neotropical Fish 7. Color and Physiology of Pigmentation 8. Morphology, Development and Muscle Growth 9. The Cardiovascular System 10. Breathing and Respiratory Adaptations 11. Nutrition and Functional Aspects of Fish Digestion 12. Osmotic and Ionic Regulation 13. Reproduction and Embryogenesis 14. Brain-Hypophysis-Gonads and Gametogenesis