The ultimate photographic guide to freshwater fishes, this Photo Index is a long-awaited and invaluable tool for all aquarists and aquarium-fish professionals. Expert coverage of 4,000 popular and rare species make this a must-have stand-alone reference, and an essential fish-finder for all collectors of the Aquarium Atlas series. Includes a comprehensive 30,000-entry index to freshwater genera and species. 1,215 pages with 4,600 color photographs.