“I Used To Be A Fish” written and illustrated by Tom Sullivan is about a fish who evolved all the way into a human. He went from fish, lizard to a monkey then human this book focused on evolution because every animal he becomes he turns into another. I really liked this book because we are learning the evolution of humans in science class. This book is aged for kids around 7-10 years old because it explains the evolution of humans in an easier way. All in all, This book has a really good illustration and I would definitely recommend this book for little kids.