The river is home to Arctic char. They were the first known people to have fished for the Arctic char. Most families supplement their diet with ringed seal, caribou, and Arctic char. Also common are polar smelt, saffron cod, polar cod, flounder and Arctic char. Species of interest include the Arctic char. The sandwich is then filled with local ingredients, such as smoked Arctic char. The Dolly Varden trout is considered part of the "S. alpinus" or Arctic char complex. Arctic char fishing takes place in Landmannalaugar and nearby lakes. Arctic char is fished off the east coast. Numerous nearby lakes and rivers provide an abundance of Arctic char and lake trout. Smaller game includes whitefish, arctic char, arctic hares, and ptarmigan. The local trout, Arctic char and the vendace are pleasing to eat. Most freshwater lakes in the Svalbard archipelago are inhabited by Arctic char. They subsisted mainly on trout (lake trout and Arctic char), whitefish, and barren-ground caribou. The Arctic Char can weigh up to 20 pounds.