Found in landlocked basins. Usually with T. arcticus, with which it possibly interbreeds . Omnivore, occasionally predatory. In autumn and winter it forms large shoals at the entrance of rivers and streams into lakes .
Dorsal spines (total): 4 - 8; Dorsal soft rays (total): 18 - 20; Anal spines: 3 - 4; Anal soft rays: 8 - 12. : fusiform / normal.
Behavioural data for Mongolian grayling is currently being reviewed.
Freshwater; benthopelagic. Temperate
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