In which of these films most of the characters are fishes?

It’s impossible to be a scuba diver and not have some affinity with the movie Finding Nemo from 2003. The fish characters brilliantly display real-life characteristics which have been transplanted into their personalities. Perfect family entertainment and equally ideal for teaching kids some fish ID skills, it’s considered one of the best-animated ocean movies by divers and non-divers alike!

Source: Padi