Arguably the least understood, and certainly the most exploited vertebrates on Earth, fishes have been predominantly viewed by us in two contexts: as a source of food, and as a source of recreation. It is as if they didn’t have lives of their own! Modern science shows otherwise. Combining science and story-telling, this presentation explores startling discoveries of fishes’ colorful lives that will make eyebrows raise and jaws drop. In this companion to Balcombe’s latest book, What a Fish Knows, you’ll learn how fishes can use tools and create mental maps, recognize shoal mates, deceive others, keep accounts, parent, woo, collaborate, and undergo gender reassignment without costly surgery.