Hippoglossus is a genus of very large righteye flounders. It comprises two species of halibut, with one species native to the northern Atlantic Ocean and the other species native to the northern Pacific Ocean.
The word hippoglossus is derived from the Greek á¼µÃÂÃÂÿà(hippos), meaning "horse", and óûῶÃÂÃÂñ (glà Âssa), meaning "tongue" - a reference to the shape of the fish.
There are two species in this genus:
Fossil remains of an indeterminate Hippoglossus are known from the Middle Miocene-aged Agnevo Formation of Sakhalin, Russia.