Fish sensory systems have been extensively studied not only because of a wide general interest in the behavioral and sensory physiology of this group, but also because fishes are well suited as biological models for studies of sensory systems. This volume describes how fish are able to perceive their physical and biological surroundings, and highlights some of the exciting developments in molecular biology of fish sensory systems. Volume 25 in the "Fish Physiology" series offers the only updated thorough examination of fish sensory systems at the molecular, cellular and systems levels. It offers a comprehensive account of the present state of science in this rapidly expanding and developing field. New physiological techniques are presented to enable examining responses at the cellular and system levels. It discusses fish sensory systems and how they have adapted to the physiological challenges presented by an aquatic environment.