im not sure but i think its either 13 or 20.....
Magikarp evolves at level 20
Level 20
20
Level 20.
By leveling it up to a certain level
Lv. 20
Lvl 20.
Magikarp evolves into a Gyarados at level 20.
It should, unless you accidentally pressed "B"
If you are going to evolve a Magickarp in Pokemon Platinum you need to: 1. Go and find yourself a MagicKarp(of course if your going to evolve a MagicKarp) 2.level up that MagicKarp to lvl 20 and then it evolves.( It will learn how to use bite when it evolves). P.S I hoped this helped you!
Stantler does not evolve.
graveler doesnt evolve at a level, you evolve it by trading.
Level 20.