Perciformes - Perches
Salmoniformes - Salmons and Trouts
Esociformes - Pikes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Gadiformes - Cods
Scorpaeniformes - Mail-cheeked fishes
Anguilliformes - Eels and morays
Pleuronectiformes - Flatfishes
Gobiiformes - Gobies
Gasterosteiformes - Sticklebacks
Osmeriformes - Smelts
The Northern Dvina is a river in northern Russia flowing through the Vologda Oblast and Arkhangelsk Oblast into the Dvina Bay of the White Sea. Along with the Pechora River to the east, it drains most of Northwest Russia into the Arctic Ocean. It should not be confused with Western Dvina.
The principal tributaries of the Northern Dvina are the Vychegda (right), the Vaga (left), and the Pinega (right).
