Yes after becoming Pokemon champion in both games you can trade but after firered delivers the ruby and sapphire to celio at one island then you can trade.
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
Your ruby game may be corrupted somehow or you forgot to beat the game in ruby, try beating the game in ruby and make sure the game is saved in a Pokemon center before you trade with Pokemon xd.
To battle Pokemon in Fire Red/ Leaf Green in Emerald you need to beat the Elite 4 and gain the Nat. pokedext. then you can Trade and Battle Pokemon using the trade and battle mode opptions in the Pokemon center. Some trainers have Pokemon from Fire Red/ Leaf Green.
Well on Fire Red You can trade with Leef Green and only if you get so the sevii islands you can trade with emerald/ruby/sapphire. Also you can trade with pokemon Gold and silver if you get to the sevii islands. Hope i helped!
trade from ruby/sapphire
no
Trade Trade from Leaf Green or Fire Red you have to trade it from fire red to sapphire to ruby to emerald!
Trade it from Pokemon Fire red
YES, YOU DUMMY!(after you defeat the Pokemon League and get the Ruby/Sapphire.)
There aren't any Growlithe in Pokemon Ruby, but you can trade for them from Pokemon Fire Red or Pokemon XD.
get the ruby and sapphire
You can do this after you find the Ruby and the Sapphire for Celio in Pokemon FireRed. then you can trade with Ruby, Sapphire and Emerald.
you trade it from fire red
you only have to beat the elite 4 on Pokemon fire red not ruby
No.
No
you can not trade crystel with ruby because Pokemon cristel is a different generaion than Pokemon rudy