This book explains how the beautiful goldfish body develops from a single fertilized egg and how this developmental process was changed during the process of domestication. The contents can be categorized as follows: i) numerous high-quality live photo images of embryonic and larval stage goldfish, ii) detailed descriptions of skeletogenesis with fluorescent microscopic and histological images, iii) the most advanced interpretation of the relationship between artificial selection and developmental processes, iv) future perspectives of the application of the genome editing techniques for...