ABSTRACT.
The results of the effect of ultrafine particles SiO2 on the body of carp (Cyprinus carpio) when included in the diet of 200 mg/kg of feed for 56 days are presented. It has been established that the intake of ultrafine particles into the body of fish is accompanied by a 100% survival rate of fish. The supplement has a positive effect on the
biochemical parameters of the blood, leading to a decrease in the level of AST and ALT.
KEYWORDS: aquaculture, carp, ultrafine particles, biochemical parameters of blood.