The book “Guppies, Pecilia, Mollienesia, Swordbearers” by Sergey Kochetov is a real find for all lovers of aquarium science and those who want to deepen their knowledge about the content and breeding of live-bearing fish . In this fascinating and informative work, the author shares his many years of experience, revealing all the subtleties of caring for these bright and cheerful inhabitants of aquariums. Sergey Kochetov, a well-known aquarist and author of several books on aquarium science, in his new work immerses the reader in the world of guppies, pecilia, mollies and swordtails. These fish not only attract attention for their variety of shapes and colors, but are also ideal candidates for beginner aquarists. Kochetov masterfully describes their habits, habits and requirements for living conditions, which makes the book an indispensable tool for anyone who wants to create a harmonious ecosystem in their aquarium. The book will be interesting for both beginners and experienced aquarists . If you are just starting your way in the aquarium and want to learn how to properly care for live-bearing fish, or if you already have experience, but want to expand your knowledge about breeding and caring for these species, then “Live-bearing” will be a real guide for you. The age of the reader does not matter - the book will be useful for both adolescents and adults who want to add bright accents to their aquariums. The topics raised in the book cover a wide range of issues: from the choice of aquarium and equipment to the characteristics of nutrition and reproduction of live-bearing fish. Kochetov shares the secrets of successful breeding, talks about possible diseases and their prevention, as well as how to create ideal conditions for the life of these fish. Readers will be able to learn how to properly combine different species in one aquarium to avoid conflicts and stress in fish. The author's style is characterized by accessibility and simplicity of presentation, which makes information easily digestible. Kochetov uses vivid examples and personal observations, which allows the reader not only to learn, but also to enjoy the process. His previous works, such as “Aquarium for Beginners” and “Fish for the Aquarium: the choice and