Over 10 sections in the book like Fish Selections , Caring , Nutrition , Diseases , Breeding And Behavior About Piranhas . Also there is a special section about The Piranha Aquariums . 96 Pages , over 64 color photographs and illustrations done by David Wenzel . The writer of this book Mr.Schleser was trained as a dentist , in 1982 he changed careers to aquatic biology , and later served for over five years as the Crator/Aquatic Biologist for the Dallas Aquarium , Dallas , Texas . He is now working for Nature's Image Inc. a natural history photography and writing company which he helped establish . Since 1988 he is doing researches at The Amazon's Regions of Peru and Brazil ; Don't miss!