"Introduction to the Study of Fishes" is a publication that is an important source of information for anyone interested in marine life. The author of the book, Albert Karl Ludwig Gottilf Gunther, collected and systematized a large amount of data about fish, which made it possible to create this comprehensive scientific guide. In his work, the author examines in detail the classification of fish, their anatomy, physiology, behavior, features of life in water, as well as the impact on the environment. This book is not only a source of knowledge about fish, but also an inspiration for further research in the field of hydrobiology and oceanology.