I want to know if Pokemon in fire red could be trade to the Pokemon in emerald version?
Answering because there's a little more than the National Dex is needed.
Yes since they are both Generation 3 games you can trade between the two. But you need the National Dex in Firered/Leafgreen.
According to Serebii, you can, but you need the National Dex in FireRed.
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