An authoritative guide to the fishes inhabiting the oceans and rivers of the Americas, Africa, Asia, Australia, Europe and the UK. Did you know a fish can sleep? Find out interesting facts like this and more in this book, which is suitable for the whole family. Includes evolution and anatomy information. Also information on SEALIFE London Aquarium volunteering. Features a technical glossary explaining biological terms for quick and easy reference and lots of colour photographs and maps.