USE OF BIOLOGICALLY ACVTIVE SUBSTANCES OF ZOOPLANKTON EXTRACTS FOR IMPROVING SURVIVAL OF FISH EMBRYOS AND LARVAE

It was found that biologically active substances of zooplankton extracts positively affect sur- vival of common, silver and bighead carps embryos and larvae at hatchery rearing. We proposed a simple schema to obtain and use zooplankton extracts, which allow increasing larval survival by 10?20% when rearing fish in hatcheries.