The blob sculpin (or "blobfish", psychrolutes phrictus) looks fairly normal in its natural habitat.

The infamous pink, saggy appearance that went viral is the result of being brought 3,000 meters to the surface. It's like how jellyfish look deflated and saggy when out of water, with the addition of tissue damage. Essentially, the public image that blobfish have is that of their deformed corpse rather than their natural, living look.

Image source.