The skilfish, Erilepis zonifer, is one of two members of the fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 family Anoplopomatidae

Anoplopomatidae

The sablefishes are a family, Anoplopomatidae, of scorpaeniform fishes. They are found in coastal waters of the north Pacific from Japan to California, where they live near the sea floor in deep water: the sablefish, Anoplopoma fimbria, has been found down to . They are large fish, with the...

 and the only species

Monotypic

In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...

 in the Erilepis genus. Found on deep rocky bottoms

Seabed

The seabed is the bottom of the ocean.- Ocean structure :Most of the oceans have a common structure, created by common physical phenomena, mainly from tectonic movement, and sediment from various sources...

 in the North Pacific

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

at depths of up to 440 metres, they can reach up to 1.83 metres in length and weigh up to 91 kilograms. Young fish display striking white blotches on their body, however their colour changes to dark grey with maturity.