The book "Genome Mapping and Genomics in Fishes and Aquatic Animals" provides a comprehensive overview of genomic research on aquatic animals and aquaculture species. It highlights advancements in genome mapping and the development of tools necessary for conducting whole-genome sequencing. These developments are crucial for improving selective breeding in aquaculture. The contributions come from leading scientists worldwide and cover a variety of species, including salmonids, cyprinids, catfish, tilapia, European sea bass, Japanese flounder, as well as shrimp and oysters. The book is a valuable resource for researchers and professionals engaged in the genomics of aquatic animals.