Hexagrammidae

thumb|right|Okhotsk atka mackerel (Pleurogrammus azonus)

The lingcod or ling cod (Ophiodon elongatus) is a fish of the greenling family Hexagrammidae. Despite its name, the lingcod is neither a cod nor a ling. It is also known as the buffalo cod, cultus cod, or Buckethead. It is the only extant member of the genus Ophiodon. A slightly larger, extinct species, Ophiodon ozymandias, is known from fossils from the Late Miocene of Southern California.

Hexagrammos is a genus of marine ray-finned fishes belonging to the family Hexagrammidae, the greenlings. These fishes are found in the north Pacific Ocean.

species of fish

Pleurogrammus is a genus of ray-finned fishes belonging to the family Hexagrammidae, the greenlings, known as Atka mackerels. These fishes are found in the northwestern Pacific Ocean.

Ophiodon is a genus of marine ray-finned fishes belonging to the family Hexagrammidae, the greenlings. It is found in the northeastern Pacific Ocean.