sadly you can't, you would have to trade it from ruby, sapphire, or emerald.
you need to get evee and give it love in the morning to get Espeon and at night to get Umbreon
there are 151 between leafgreen and fire red
YES
You have to trade it from Fire Red
you don't you get it in fire red
you cant
bellsprout and what they evolve into
The same Pokemon in fire red, except for a couple.
You can't. have to trade from fire red
Pokemon fire red is better.
You can only catch them in Pokemon fire red.
You have to trade with someone who has fire red.