Hemiramphus commersonii; Print; Hemiramphus is a genus of schooling marine fish commonly called halfbeaks; garfish; or ballyhoos; and are members of the family Hemiramphidae. They inhabit the surface of warm temperate and tropical sea; and feed on algae; plankton; and smaller fish. Hemiramphus species are edible but are more important as food fish for larger predatory species including dolphinfish and billfish.; 1700-1880