Assessment of the current status of rare and vulnerable native rheophilic cyprinids (barbel, Rutilus frisii, chub, asp, vimba bream, etc.) in the Dnieper (Belarus), Prut and Dniester rivers (Ukrain
e), development of methodological approaches to the formation and maintenance of their broodstocks for their further artificial reproduction in aquaculture conditions to maintain biological diversity, preserve and increase the number of natural populations. ... [more]