Morphophysiological index of the heart of Carassius auratus Gibelio Cedar lake

This article presents the results of studies of the morphophysiological index of the heart of Carassius auratus gibelio, which was caught in Lake Kedrovoye, Krasnoturansky district, Krasnoyarsk Territory, in the summer (July). The article analyzes the values of the heart index depending on the age and number of individuals. The indicators are different for each age. The highest index values are typical for sexually mature individuals.