(Salvethymus svetovidovi)
Salvethymus svetovidovi,also called the long-finned charr,is a species of salmonid fish.It is endemic to Elgygytgyn Lake in Chukotka,Far East of Russia,together with another char species,the small-mouth char Salvelinus elgyticus.A third char species in the same lake is the Boganid char Salvelinus cf.boganidae.