The book "The Conscientious Marine Aquarist," by Robert Fenner is about how to maintain a healthy aquarium and about all types of saltwater fish.  The book starts out by listing the necessary supplies to start a saltwater aquarium.  As the book progresses, it begins to talk about many classifications of tropical saltwater fish that can survive in a suitable aquarium.  Many pictures with captions are provided for the readers enjoyment.  For each classification of fish (about 30 classifications given), Robert Fenner writes about the fish's general behavior, diet, illness, and which fish they can tolerate.  "The Conscientious Marine Aquarist" lists each name of fish for every classification of fish, and whether they are or are not good choices for an aquarium. Also, there are many types of suitable coral and invertebrates listed that are suitable for an aquarium.  The book is quite useful and helpful to the success of any beginning aquarist.