Nah buddy, we all went to school, and it’s abundantly clear that in modern English, and animal is part of the Kingdom Animalia.

So, the only people (in the English speaking world) who don’t think of insects or fish an animals, either are of a much, much older generation, or didn’t do very well in school.

Most fucking 6-year-olds, in Australia at least, would be able to answer yes to “is a fish an animal?”.