Myoxocephalus niger, the warthead sculpin, is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This demersal fish is found in the northern Pacific Ocean, with a range extending from the Peter the Great Gulf and the Kamchatka Peninsula into the Bering Sea. It is found at depths from . References niger Taxa named by Tarleton Hoffman Bean Fish of the Bering Sea Sea of Okhotsk Fauna of the Aleutian Islands Fish described in 1881