The Taimen, Hucho taimen, is listed as Vulnerable on the IUCN Red List of Threatened SpeciesTM and is the largest salmonid in the world. A migratory fish, reaching lengths of 2 metres and living over 30 years of age, it occurs in Europe and Asia, including parts of the Caspian and Arctic drainages in Eurasia and portions of the Pacific drainage in Mongolia, Russia and China.
Taimen are threatened by pollution, sedimentation and erosion, mining, damming, road construction, illegal fishing, recreational angling and climate change. Damming is an especially serious threat e.g., there is a new dam planned on the Eg-Uur River in Mongolia that is part of the core habitat of one of the last healthy Taimen populations in the world.
Conservation action should include the development of freshwater protected areas; better regulation of commercial and recreational fisheries; and a reduction in mining, and sand and gravel extraction in the species’ range. Further research is required to better understand the life history and habitats of this species. The Taimen should also be added to the Convention of Migratory Species, to provide greater international support for conservation activities.