via youtube.com
On some one of his many trips abroad, my dad picked us up a VHS compilation called Cartoon Classics of the 1930s (at least, I think that was what it was called). It included a number of cartoons, including this one, and maybe one with Felix the Cat.
Anyway, a fragment of the song kept popping into my head, because one of the fish in our aquarium just gave birth (they're live-bearers) and my wife keeps referring to the "fry", which I don't think I ever realized was the term for baby fish.