<Li> Erik Per Sullivan as Sheldon, a seahorse cub and Nemo's friend at school </Li> <Li> John Ratzenberger as the school of moonfish </Li> <P> The inspiration for Nemo sprang from multiple experiences, going back to director Andrew Stanton's childhood, when he loved going to the dentist to see the fish tank, assuming that the fish were from the ocean and wanted to go home . In 1992, shortly after his son was born, he and his family took a trip to Six Flags Discovery Kingdom (which was called Marine World at the time). There, after seeing the shark tube and various exhibits, he felt that the underwater world could be done beautifully in computer animation . Later, in 1997, he took his son for a walk in the park, but realized that he was overprotecting him and lost an opportunity to have a father - son experience that day . </P> <P> In an interview with National Geographic magazine, Stanton said that the idea for the characters of Marlin and Nemo came from a photograph of two clownfish peeking out of an anemone: </P>

Who does the voice of bruce in finding nemo