How do you evolve Magikarp soul silver?

Answer 1

Magikarp evolves at lvl 20 or 21. I put my magikarp in the datcare for 2 days and it was already higher then level 20. You can also evolve Magikarp by giving it rare candies, or training it.Also, by putting it in the daycare, it will learn the move tackle. Hope This Helped! but don't worry if u can't evolve it, there's a red gyrados in the game and it's really easy to find.