What is wrong (if you don’t try to match the real biological taxonomy of Pisces) with definition like “vertebrate constantly living in water” for “fish”? While true_fish and dolphins have some differences, they have the very common points that led to the unification in the first place.
EDIT: Had already expanded upon by Scott Alexander.
What is wrong (if you don’t try to match the real biological taxonomy of Pisces) with definition like “vertebrate constantly living in water” for “fish”? While true_fish and dolphins have some differences, they have the very common points that led to the unification in the first place.
EDIT: Had already expanded upon by Scott Alexander.