Khorasan (also transcribed as Khurasan and Khorassan, anciently called Traxiane during Hellenistic and Parthian times) currently names a region located in north eastern Iran, but historically referred to a much larger area east and north-east of the Persian Empire. The name Khorasan is Persian and means "where the sun arrives from. " The name was given to the eastern province of Persia during the Sassanid Empire.
The broad whitefish (Coregonus nasus) is a freshwater whitefish species. Dark silvery in colour, and like a herring in its shape, its distinctive features include a convex head, short gill rakers, and a mild overbite. It is found in the Arctic-draining streams, lakes, and rivers of far eastern Russia and North America. Its prey includes larval insects, snails, and shellfish. It is eaten by humans and brown bears.