Explore India’s rich aquatic fungal diversity with this definitive manual. It meticulously covers the occurrence, distribution, and taxonomic keys for Chytridiomycetes and Oomycetes, crucial for understanding their vital role in biodeterioration and aquatic ecosystems. Essential for postgraduate students, researchers, teachers, and professionals in Indian mycology, fisheries, and water management, this authoritative guide provides critical insights into fungal identification, physiology, and ecological significance across the subcontinent.