In SLowpoke well at the very back were you battle the Team Rocket guy
They're most likely to appear if you surf in slowpoke well
The only place you can find one is in azalea town in the slowpoke well. I caught one and its so cute!!!
Slow poke well , walk around in the back for a while , slowpoke well is in Azaela town
Go to slowpoke well look down there
In slowpoke well.