Hagfishes and lampreys both examples of jawless fishes are elongated eel like animals lacking paired fins and are the only living representatives of ancient creatures that gave rise to current species of fish and eventually humans This volume provides an overview of the current status of knowledge on a variety of topics related to jawless fishes including their taxonomy zoogeography phylogeny molecular biology evolution life history role in the ecosystem and fisheries and management of hagfishes and lampreys worldwide This is the first book dealing exclusively with the various aspects of jawless fish species throughout the world It brings together a number of papers providing new data on jawless fishes and offers readers a range of useful information within a single reference reflecting the growing appreciation for hagfishes and lampreys worldwide