These unusual looking marine fish need a steady diet of plankton to stay healthy and active. Here is a wealth of advice and information for aquarium hobbyists on keeping seahorses of different varieties. Barron's comprehensive Pet Owner's Manuals are heavily illustrated and filled with useful information. They instruct owners on how to care for their dogs, cats, birds, fish, and other animals. Books give advice on purchasing and acquiring, health care, feeding, and much more. Clear, straightforward texts are accompanied by high-quality full-color photos and anatomically accurate line art, as well as helpful tables and charts.