The aim of the authors of this book is to make it easier to keep these beautiful but demanding fish. The book presents numerous colour varieties of discus fish and discusses in detail the conditions required for keeping them: water requirements (pH, temperature, hardness), essential equipment (filters, heaters, thermostats, lighting) and suitable foods. The authors also explain the principles of breeding discus fish and the most common diseases, including how to treat and prevent them. They also present species of fish that can share an aquarium with them.