Book excerpt: This book provides a comprehensive discussion of the development and evolution of flatfish metamorphosis. The chapters use the tissue model to explain a series of metamorphic events, including eye migration, front bone deformation, dorsal fin elongation and regression, and body depth change, left/right asymmetrical pigmentation, give a hypothesis on the mechanism of eye migration, and the evolutionary origin of left/right eye asymmetry. The book is written by expert who has worked on flatfish metamorphosis over 20 years. It serves as a valuable reference for graduate students and researchers in related fields