- beluga, hausen, white sturgeon, Acipenser huso - valuable source of caviar and isinglass; found in Black and Caspian seas
--1 is a kind of sturgeon
--1 is a member of Acipenser, genus Acipenser
--1 has parts: beluga caviar - Pacific sturgeon, white sturgeon, Sacramento sturgeon, Acipenser transmontanus - food and game fish of marine and fresh waters of northwestern coast of North America
--2 is a kind of sturgeon
--2 is a member of Acipenser, genus Acipenser