The lenok is a species of freshwater fish belonging to the family Salmonidae. It is primarily found in the rivers and lakes of Siberia and parts of Mongolia. Known for its elongated body and distinctive coloration, the lenok can grow up to 1 meter in length. It is a popular target for anglers due to its fighting ability and is often sought after for sport fishing. Lenoks are carnivorous and primarily feed on smaller fish, insects, and crustaceans. They thrive in cold, clear waters and are typically found in fast-flowing streams and rivers. The species plays an important role in the aquatic ecosystem, contributing to the biodiversity of its habitat.