The Physiology of Fishes, Volume I focuses on authoritative reviews of the state of knowledge of the various aspects of fish physiology. The selection first offers information on aquatic respiration of fish and cardiovascular systems. Topics include respiration system, metabolic rate, air-breathing organs, relative dimensions of the cardiovascular system, and reaction of piscine circulation to hormones and drugs. The text then elaborates on the alimentary canal and digestion, including esophagus, stomach, intestine, rectum, gastric digestion, and control of digestive functions. The book examines excretion and osmoregulation and the skin and scales, as well as stenohaline and anadromous fishes, skin, and scales. The publication also underscores endocrine organs, gonads and reproduction, and early development and hatching. The selection is a dependable reference for general zoologists and comparative physiologists.