The Blob Sculpin (Psychrolutes phrictus) is a species of deep-sea fish of the Psychrolutidae family. It feeds mainly on crustaceans, molluscs, and sea urchins.
It lives off the continental shelves in very deep water (839–2800 m) in the North Pacific ocean by the coasts of Japan, the Bering Sea, and California. When the female lays eggs the male guards them. Blob sculpin have spikes on their scales to protect them from enemies.