Abstract
An underwater exploration that overturns myths about fishes and reveals their complex lives, from tool use to social behavior There are more than thirty thousand species of fish--more than all mammals, birds, reptiles, and amphibians combined. But for all their breathtaking diversity and beauty, we rarely consider how fish think, feel, and behave. In What a Fish Knows, the ethologist Jonathan Balcombe takes us under the sea and to the other side of the aquarium glass to reveal what fishes can do, how they do it, and why.