Phytobiotics for Sustainable Aquaculture: Innovations, Benefits, and Future Perspectives is a comprehensive reference on plant-derived compounds, including herbs, spices, and micro- and macroalgae, as tools for disease management, nutrition, welfare, and sustainability in farmed fish and shrimp. The book covers molecular mechanisms and bioactive properties; demonstrates applications against bacterial, viral, fungal, and parasitic diseases; and evaluates roles in immune modulation, stress mitigation, growth, and reproduction. It also explores advanced delivery systems-nano- and microencapsulation for controlled and targeted release-and situates phytobiotics within regulatory and environmental frameworks, precision aquaculture, and future therapeutics. Applications include their use as natural anesthetics, functional feed additives, reproductive modulators, and, where appropriate, piscicides. Key Features: Covers molecular mechanisms, bioactive compounds, and pathogen-management applications of phytobiotics Explores the targeted use of phytobiotics for combating bacterial, viral, fungal, and parasitic infections in aquaculture Discusses the role of phytobiotics in nutrition, stress reduction, and immune enhancement for improved aquaculture health Presents advanced delivery techniques such as nanoencapsulation, microencapsulation, and precision dosing Addresses regulatory challenges, environmental impact, and future innovations in sustainable aquaculture practices This book is useful for researchers, professionals, veterinarians, nutritionists, hatchery managers, policymakers, and advanced students in aquaculture and nutraceutical sciences.