The ignorance is off the charts with this one.

I can maaaaaaybe see how someone might argue that fish are not animals, because a lot of people actually distinguish sea life as being completely separate from land and air (I know some people who don't eat any fish/seafood because of this).

I'd be willing to look past that, but you'd think that once it was clarified by someone that yes, fish really *are* animals, the person making that claim would say "oh, ok, I stand corrected. Learned something today!"

But nooo, this Tumblr user decided to double down on the stupidity and then just deny everything.