Abstract
The study explores different techniques used to facilitate koi carp reproduction, including
manipulation of environmental conditions, hormonal control and genetic selection.
Manipulation of environmental conditions, such as water temperature control, can
synchronize the spawning period and optimize reproductive success rates. In addition,
adequate brood-stock nutrition is essential for high fecundity. The study also reveals the
possibility of obtaining unique color variations in koi fingerlings from various crossbreeds.
Genetic selection is another crucial aspect of improving koi carp, and the method of
directed crossbreeding makes it possible to obtain specific characteristics.
Keywords: koi carp, genetic selection, hormonal control, food, crossbreeding, fecundity,
coloration, pigmentation.