Amazon Prime Video: You can rent or purchase "Danny Phantom: Fright Fight!" on Amazon Prime Video.
Google Play Movies & TV: You can rent or purchase "Danny Phantom: Fright Fight!" on Google Play Movies & TV.
YouTube: You can rent or purchase "Danny Phantom: Fright Fight!" on YouTube.
iTunes: You can rent or purchase "Danny Phantom: Fright Fight!" on iTunes.
Additionally, you may also be able to watch "Danny Phantom: Fright Fight!" on streaming services that offer Nickelodeon content, such as Hulu and Paramount+.
It's worth noting that the availability of "Danny Phantom: Fright Fight!" may vary depending on your region and the subscription plans you have with the respective streaming platforms.