No other book written to the average hobbyist addresses topics like fish mass determination, fish pharmacology, or ethics and aquariums. The author also thoroughly addresses common problems such as diet and nutrition, tankmate selection and maintaining proper water quality. In addition to detailed care information for a wide variety of both common and rare fish species, this book covers non-fish aquatic animals , such as octopuses, rare shrimps and other invertabrates. Inspiring photographs highlight the awesome beauty of a variety of marine creatures while numerous graphs and charts makethe information easy to understand and apply.