* Genus Hippoglossus
** Atlantic halibut, Hippoglossus hippoglossus - lives in the North Atlantic
** Pacific halibut, Hippoglossus stenolepis - lives in the North Pacific Ocean
* Genus Reinhardtius
**Greenland halibut, Reinhardtius hippoglossoides - lives in the cold northern Atlantic, northern Pacific, and Arctic Oceans

Physical characteristics