Book excerpt: Many books emphasize the pathological histology of fish, but this volume fills a gap in the literature by focusing on normal fish histology. A general reference guide, it provides an extensive set of histological images of fish, discussing approximately 40 species. The book presents histology as a discipline--including its methodology and techniques--and its goals of investigating the structure and function of tissue samples. By histologically examining the normal physiology of fish tissue, scientists can gain insight into signs of disease not easily recognized on gross examination.