Sesame Subjects: My First Book about Fish is a 2006 Sesame Street book in the "Sesame Subjects" series. Professor Grover and Elmo share all they know about fish - how they eat, breathe, swim, and more. Special appearance by Elmo’s pet goldfish, Dorothy. The book begins with very basic facts about fish, such as their common traits and the many varieties that they come in. It then moves on to discuss their body parts, the type of food they eat, and how they reproduce.