4664 Hucho hucho (Linnaeus, 1758) Salmonidae Salmonids Salmoninae Salmoniformes Teleostei Huchen Europe: Danube drainage. Introduced into other European river basins when their numbers declined due to ecological changes in the Danube. IGFA 46 N 12 E Hucho hucho IGFA 46 N 13 E Hucho hucho IGFA 46 N 13 E Hucho hucho AMNH 96736 1990 Hucho hucho