The Siberian sturgeon (Acipenser baerii) is an economically important species. Sturgeon stockassessment during fingerling production is considered to be one of the most difficult phases ofhatchery rearing. The present study investigated the expression of growth hormone (GH)mRNA in unfertilized eggs, fertilized eggs, eyed eggs (2 day before hatching), non-viable eggsand newly-hatched Siberian st...