Author: Jardine, 1835
Comments: Inhabits large oligotrophic lakes.  In Scotland, this species occurs usually in lakes inhabited by <i>Salvelinus</i> species on which it preys.  Feeds on fishes and a variety of insects.  In Scotland, preys on invertebrates until about 30 cm SL, then becomes piscivorous, feeding mostly on <i>Salvelinus</i> species.  Spawns only in the larger and deeper tributaries (Ref. 59043).