The story of Calvisius begins in the late '70s with the foundation of Agroittica, an avant-garde fish farm that maximizes the integration of an industrial, aquaculture, and agricultural environment, thus setting the standard for sustainable aquaculture for the years to come. In 1981 Gino Ravagnan, longtime partner of the company, and Professor Serge Doroshov, marine biologist of Davis University in California, jointly develop a pioneering project, which leads to breeding White Sturgeon, a sturgeon species indigenous of the Pacific Ocean, at the farms in Calvisano.
The introduction of the new species represents the beginning of a great and prosperous adventure for Agroittica, making it the first company in Europe capable of raising sturgeon in captivity.
The passion, craftsmanship, commitment, and research allocated to the care and wellbeing of White Sturgeon and its farming environment, result in the production of a superior quality caviar, Calvisius Tradition, also called "the Black Gold of Calvisano.