These ladies are the product of one very inbred pond in South Korea, they are the last of their kind because no male-equivalent exists. If you need to know more than that, check out Weird Asian News.
Ok, maybe I will be a little esoteric, its a bit of a personal compulsion. Anyways, I was struck by how different of an emotional response a fish gets when it has features resembling our own, even if its just a mutant pond-carp.
As a strange coincidence, the same day that I found this video, I had been looking at some work by Kiki Smith in a lecture about abject art. Kiki regularly melds human and animal forms in moving and disturbing ways.