In their natural environment, Siberian sturgeon feed mainly on small worms, crustaceans and small molluscs. Farmed sturgeon are fed on granules made of flour and fish oil, plants, minerals and vitamins.
This flour and fish oil comes from sustainable fisheries managed by quotas. The granules are adapted to the needs and size of fish, from 300 µ at birth to 9 mm for females. The amount of food distributed is calculated daily according to the water temperature and the fishes' weight and appetite. We run an ongoing programme with research laboratories and feed producers to adapt feed to the specific needs of fish.
To ensure their well-being, females of caviar-producing age are farmed at low densities: 2-3 kg/m2 in ponds and 30 kg/m2 in tanks.
Pond water is heated naturally by the sun and its oxygen supply comes from algae growing in these wide expanses of water.
Fish farms are supplied with excellent-quality water and are usually located near its source. Discharged water is regularly checked and complies with environmental standards.