Even for long-time hobbyists, the thought of maintaining a thriving aquatic ecosystem can sometimes be overwhelming, especially when attempting to keep any of the rare or particularly challenging species available in the marine aquarium trade today. These species often provide unique challenges that require creative solutions. 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 invertebrates. Inspiring photographs highlight the awesome beauty of a variety of marine creatures while numerous graphs and charts make the information easy to understand and apply.