There's a book: "Why Fish Don't Exist" which is pretty good. Evolutionary, my understanding is that things are usually named after their ancestry (phylogenetica

There's a book: "Why Fish Don't Exist" which is pretty good. Evolutionary, my understanding is that things are usually named after their ancestry (phylogenetically?), while fish are basically... "have fish shape and is in water" which becomes awkward. Lungfish and coelacanths are a lot closely related to humans than to salmon.