This book describes the developmental process of the brain of the medaka fish. It aims to understand the brain structure of vertebrates, including humans, by taking the brain of the medaka fish as an example and showing its actual developmental process. From developmental and evolutionary viewpoints, the understanding of the brain proceeds from simple to complex structures. Fish retain the basic form of vertebrates, and their brain morphology is relatively simple. Therefore, the fish brain is useful in understanding the brain structure. This book is unique for describing the entire process of...