Nereus

Nereus (Νηρευς) was the Greek god of the rich bounty of fish in the sea. He could assume any form that he wished and could speak prophecies, as well. Sometimes, Nereus was depicted as a man with a fish tail in the place of legs. He was a son of Pontus and Gaea. He was married to Doris, one of the Oceanids, and fathered the Nereids and Nerites by her. Without a consort, Nereus fathered Glaucus.