Pokemon White: How to Catch Dragonair
Dragonair has been around in Pokemon since the beginning. While most of the older pokemon aren’t in Pokemon Black or White, Dragonair is still around.
Dragoniar is found by fishing around Dragonspiral Tower. You can fish it out of regular water for about a 5% chance of encounter, or out of swirling water for about a 9% chance of encounter.
Alternatively, you can catch a Dratini instead since it has a much higher encounter rate and level it up to get Dragonair.