What animals live in the river Douro?

* Atlantic salmon (Salmo salar)

* Sea trout (Salmo trutta)

* Brown trout (Salmo trutta)

* Rainbow trout (Oncorhynchus mykiss)

* Carp (Cyprinus carpio)

* Tench (Tinca tinca)

* Eel (Anguilla anguilla)

* Flounder (Platichthys flesus)

* Sea bass (Dicentrarchus labrax)

* Gilthead bream (Sparus aurata)

Mammals

* Otter (Lutra lutra)

* Water vole (Arvicola amphibius)

Birds

* Grey heron (Ardea cinerea)

* Mallard (Anas platyrhynchos)

* Teal (Anas crecca)

* Wigeon (Anas penelope)

* Shoveler (Anas clypeata)

* Gadwall (Anas strepera)

* Tufted duck (Aythya fuligula)

* Pochard (Aythya ferina)

* Goldeneye (Bucephala clangula)

* Goosander (Mergus merganser)

* Red-breasted merganser (Mergus serrator)

Reptiles

* Common lizard (Lacerta vivipara)

* Slow worm (Anguis fragilis)

* Grass snake (Natrix natrix)

* Dice snake (Natrix tessellata)