Book excerpt: This book reviews up-to-date knowledge on the biology and aquaculture of tilapia, with special focus on the Nile tilapia (Oreochromis niloticus). Tilapia are a group of fish species that have become one of the most cultured worldwide, currently having a big economic impact on both developed and developing countries. The first 12 chapters of the present book cover different aspects of tilapia biology such as genetics, nutrition, osmoregulation, pathology, reproduction and development. Each chapter includes both basic knowledge and its application to tilapia culture. The last 3 chapters are devoted to cutting-edge techniques for the industry of tilapia aquaculture. Experts from both academia and research institutes provide their expertise on the present book.