How do you catch moltres in ruby?

You can't catch Moltres in Pokémon Ruby. It is exclusive to Pokémon FireRed and LeafGreen, and you encounter it in Victory Road after you become Champion.

Here are some ways to get Moltres in Ruby:

* Trading: The most common way to obtain Moltres in Ruby is by trading with someone who has a FireRed or LeafGreen game.

* Events: Occasionally, Nintendo might host events where you can get Moltres in Ruby. Keep an eye out for announcements on their website or social media.

Remember that Moltres is a powerful Fire/Flying type Pokémon, so be prepared for a challenging battle!