The Sakhalin taimen (Parahucho perryi, syn. Hucho perryi), also known as the Japanese huchen, is a large, East Asian species of fish in the salmon family (Salmonidae). It is found in the Primorsky Krai and Khabarovsk regions of eastern Russia, Sakhalin Island, the Kuril Islands and Hokkaido, Japan and inhabits lakes and large rivers. The population has been in general decline for a century at least. Contributory factors include degradation of the environment by logging, oil exploration and change of land use to agriculture. The fish is caught by commercial fishing as bycatch, by recreational anglers and illegally by poaching, and present populations are estimated to be less than 5% of their historic levels. The International Union for Conservation of Nature has rated the fish as being crit