About the book: 1977 / The life of nature is amazing, complex, interesting and diverse in all its manifestations. Love for nature makes us reproduce a “piece of nature” in a small vessel - an aquarium. A properly equipped aquarium contains a certain number of fish and plants that are suitable for each other in terms of keeping conditions: temperature, lighting, “biological balance”. In the last decade, the art of keeping fish has risen to a higher scientific level. This is manifested in a higher level of equipment in the aquarium industry with all kinds of equipment and devices, as well as in a more meaningful approach to the processes occurring in aquariums when keeping and breeding fish. The book describes fish that live well in aquarium conditions and, for the most part, reproduce. The book is designed for specialist biologists, as well as for a wide range of amateur aquarists.