You talk to a fishing guru then agree that you like fishing (even if you dont) then he will say something like (Ilike Your style) then he gives you a rod
magikarp
Heck if I know!! Haha
ask the fishermen but becareful some might want to battle
in the somewhat tall grass. or when you are fishing with a fishing pole. or when you run into a Pokemon when surfing on water.
The best fishing spot on Pokemon diamond is the 3 lakes where u can also find mesprit uxie and azelf
at jubilife or enterna city
you get it in the house on silence bridge
yes you do need a fishing pole to catch mitotic in Pokemon black but you cant catch that Pokemon you have to catch the first evolvation and then you train it until in evolve into a mitotic
You talk to fishermen and one gives you a fishing rod.
press a
go to the lake of rage
The safari zone,fishing,or surfing