Question: how to get all eevee evolutions in fire red?
Answer: Gathering Multiple Eevee. Breed a single Eevee with a Ditto in the Pokemon Day Care Center to create more Eevee. ... 
Vaporeon. Use a Water Stone on an Eevee to change it into a Vaporeon. ... 
Jolteon. ... 
Flareon. ... 
Umbreon and Espeon.