This book provides valuable information to scientists working in the area of growth and reproductive physiology of freshwater crabs. Chapter one provides a comprehensive information on the aspects of growth and reproduction of crustaceans. The second chapter analyzes histology of Y organ in relation to moult cycle. Chapter three portrays the impact of eyestalk ablation on the histology of Y organ. Chapter four covers seasonal and moult related changes in the spermatogenesis. Chapters five and six describe the oocyte development and characterization of yolk proteins throughout the female reproductive cycle in the freshwater crab T. schirnerae.