The book deals with the scientific foundations of fish production and care, a scientific study to know the foundations of fish production from the theoretical and practical aspects, in addition to knowing the location of fish in the animal kingdom, fish body parts and their functions, the characteristics of the fish environment, the position of fish farming in terms of its types, requirements and diseases, concluding with an explanation of how to raise and economize fish, in addition to adding many colorful fish pictures to identify them.