The Arctic cisco is a small fish species found primarily in the cold waters of the Arctic and sub-Arctic regions. It belongs to the salmon family and is known for its slender body and silvery color. This fish typically inhabits rivers, lakes, and coastal areas, where it plays a vital role in the local ecosystem. Arctic cisco are anadromous, meaning they migrate from the ocean to freshwater rivers to spawn. They feed on zooplankton and small invertebrates, making them an important food source for various predators, including birds and larger fish. Their populations are influenced by environmental changes and climate conditions in their habitats.