Pra
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Perciformes - Perches
Salmoniformes - Salmons and Trouts
Esociformes - Pikes
Siluriformes - Catfishes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Anguilliformes - Eels and morays
Mugiliformes - Mullets
Gobiiformes - Gobies
Gasterosteiformes - Sticklebacks
Atheriniformes - Silversides
Perciformes - Perches
Salmoniformes - Salmons and Trouts
Esociformes - Pikes
Siluriformes - Catfishes
Cypriniformes - Carps
Acipenseriformes - Sturgeons and Paddlefish
Anguilliformes - Eels and morays
Mugiliformes - Mullets
Gobiiformes - Gobies
Gasterosteiformes - Sticklebacks
Atheriniformes - Silversides
The Pra (Russian: Пра) is a river in the Ryazan and Moscow Oblasts in Russia, a left tributary of the Oka. It is 167 kilometres in length. The area of its basin is 5,520 square kilometres. The Pra River freezes up in late November and stays under the ice until April.