Synopsis The present encyclopaedic work on fishes is designed to impart latest information in the light of recent developments and researches in the field besides the basic conventional information. This text is designed to approach the morphology, anatomy, physiology and development of the Fishes in a coherent way since it is most natural for a student in studying the architectural elements of an animal body in the quest to know how they function. Profusely illustrated, this work features a text, reference and a laboratory guide. It deals with the structures and physiological phenomena of each system. Origin, Adaptative radiation and other general topics are also dealt in details. No doubt, this work, in three volumes, will not only meet the requirement of Indian students but will also be useful as a guideline to the teachers and researchers.