Abstract
Growth and feeding of the stone sculpin Paracottus knerii (Cottidae) is investigated in Water Bodies of Different Types: Baikal (the littoral of its southern part), the Angara River, and the mountainous Sobolinoe Lake (the southern Baikal basin). The highest growth rate is characteristic of the South-Baikalian population, followed by the Angara population. The stone sculpin from Sobolinoe Lake is slow-growing. The growth rate of specimens of the latter is by 1.5–2 times lower than in the two aforementioned populations due to inferior feeding conditions of this water body. The size-age changes in the food spectrum of all investigated populations are consecutive change of all principal components and increase in size of the consumed prey
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