Biotesting . Biological methods for determining the toxicity of the aquatic environment", written by the author's team led by Ryabukhin E. In. and Zarubin S. L. It is a unique work that immerses the reader in the world of ecology and biology, exploring the most important aspects of assessing the toxicity of the aquatic environment. This publication will be of particular interest to specialists in the field of ecology, biology, environmental protection, as well as students and graduate students studying these disciplines. The book discusses modern biological methods used to determine the toxicity of aquatic ecosystems. The authors focus on how water pollution affects living organisms and ecosystems in general. They offer the reader not only theoretical foundations, but also practical recommendations for conducting biotests, which makes the work especially valuable for practicing ecologists and researchers. The topics raised in the book cover a wide range of issues, from sampling methods and their analysis to assessing the effects of various pollutants on aquatic organisms. The authors share their experience, describing both classical and modern approaches to biotesting, which allows the reader to get a complete picture of the current state of science in this area. The book also addresses important aspects of the legislation and standards governing biotesting, making it an indispensable reference for professionals. The style of the authors is characterized by accessibility and clarity of presentation, which allows even those who are not experts in this field, easily absorb material. Ryabukhin and Zarubin use many examples and illustrations, which makes reading not only informative, but also fascinating. Their approach to the presentation of the material is based on many years of experience in the field of ecology and scientific research, which gives the book special value. This book will be a great addition to the library for anyone interested in ecology and environmental protection. It will be useful to both professional ecologists and students who are just beginning their journey in this field. In addition, it can attract the attention of a wide audience, including activists and people who are not indifferent to environmental problems, because the issues of water pollution concern each of us. If you are looking for literature that will help you better understand the problems of aquatic toxicity and the methods of its research, then "Biotesting. Biological methods for determining the toxicity of the aquatic environment” will be a real find for you This book will not only enrich your knowledge, but also inspire further research and action to protect our planet. In conclusion, it is worth noting that the work of Ryabukhin and Zarubin is not just a textbook, but a real encyclopedia of knowledge in the field of biotesting, which will help you understand the complex issues of ecology and toxicology. Read, study and apply the knowledge gained in practice, because the future of our water bodies and ecosystems as a whole depends on it.