Nature and Nurture; 1 What are Fish?; EVOLUTION; RECENT LINEAGES; ANATOMY; HABITATS; 2 Setting Up an Aquarium; SIZE; STOCKING CALCULATION; MODERN TANK DESIGN; SITING YOUR TANK; CABINETS; THE SUBSTRATE; HEATING; LIGHTING; FILTRATION; PLANTS AND PLANTING; WATER CHEMISTRY; THE SIGNIFICANCE OF pH; ASSEMBLY; ROCKWORK; BACKGROUND; 3 Introducing the Categories of Fish; THE VARIOUS GROUPS: HOW TAXONOMY WORKS; AN AQUARIST CLASSIFICATION; CYPRINIDS; CHARACINS; CICHLIDS; ANABANTOIDS; TOOTHCARPS: LIVEBEARERS AND KILLIFISH; CATFISH; OTHER FISH; 4 Stocking and Maintaining the Aquarium.;From the Fish Keeping Made Easy series, FRESHWATER AQUARIUMS explains the do's and don'ts of one of the most popular hobbies in the world. With the help of more than 140 photographs and diagrams, this book for beginners and fish keeping enthusiasts alike reveals how to choose and set up an aquarium, select fish, and watch them thrive.