DESCRIZIONE
A fish feed useful in a method for smoltification and prevention of desmoltification in Salmonidae, and for prophylaxis and treatment of haemorrhagic smolt syndrome (HSS) in Salmonidae. The feed contains protein, fat, carbohydrates, vitamins, minerals and water, and in addition comprises sodium salts (Na+) from 10 -100 g/kg by weight, polyvalent cation receptor modulator (PVCR) from 1-10 g/kg by weight, magnesium salts (Mg2+) from 0.1-100 g/kg by weight, and calcium salts (Ca2+) from 0.1-100 g/kg by weight.