Handbook on Fisheries and Aquaculture Technology" is an essential guide for researchers, entrepreneurs, and professionals in the fishery and aquaculture industry. The book provides comprehensive insights into fish farming, aquaculture technology, fish species classification, and modern fish processing techniques. The fishery sector plays a crucial role in the global economy, contributing significantly to employment, food security, and exports. With rapid advancements in aquaculture technology, fish farming has evolved from small-scale family ponds to large-scale intensive fish production systems catering to global markets. This book explores both traditional and modern fishery practices, including freshwater and marine fish farming, cold-water fisheries, aquaculture infrastructure, water quality management, fish breeding techniques, disease control, fish feed management, and fish processing methods. It covers detailed classifications of fish species, their economic importance, and their role in human nutrition. The book delves into modern fish farming techniques, including composite fish culture, air-breathing fish culture, trout farming, ornamental fish breeding, and integrated fish farming with agriculture and livestock. Additionally, new techniques such as genetic engineering in aquaculture, induced breeding, and re circulatory aquaculture systems (RAS) are discussed extensively.