As far as I know, You can't. But during the the time when it evolves, you can press the "B" Button and it will cancel the the evolving. Otherwise, you'd would have to reset it back. Which is, you just click the power button and it will be as if it never happened. :)
it evovle at 16
If you mean water pokemon then they all evovle at a certain order.
it will evovle at level forty-five
no
Magikarp don,t evovle with a stone it evovle at lvl 31 i think i.
train it
garados
It has.
Ninetales
it doesn't
gravler
train him :)