As of my last update, "Finding Nemo" is not available on Netflix. The film is produced by Pixar Animation Studios and is distributed by Walt Disney Pictures, so it is typically available on Disney+. Streaming availability can change, so it's always a good idea to check the latest listings on the respective platforms.

In "Finding Nemo," Dory is not explicitly identified as autistic, but her character exhibits traits that some viewers interpret as similar to autism spectrum behaviors. She struggles with short-term memory loss, which affects her social interactions and perception of her environment. While the filmmakers have not labeled her as autistic, Dory's kindness, resilience, and unique way of navigating challenges resonate with many audiences. The character promotes themes of acceptance and understanding of differences, which can be related to discussions about neurodiversity.

"Finding Nemo" is not based on a true story, but it is inspired by real marine life and environments. The film features a clownfish named Marlin who searches for his son, Nemo, in the vast ocean. While the characters and plot are fictional, the movie does portray various underwater species and ecosystems accurately, showcasing the beauty and challenges of ocean life. The film raises awareness about marine conservation and the importance of protecting ocean habitats, but its storyline and characters are purely imaginative.

As of now, there has been no official announcement regarding "Finding Nemo 3." While Pixar and Disney often revisit successful franchises, there are currently no confirmed plans for a third installment in the "Finding Nemo" series. The focus has primarily been on other projects, including the sequel "Finding Dory," released in 2016. Fans of the original film may have to wait for any updates from the studio regarding a potential third movie.