Note that White-striped Form Basculin is not regional and it’s obtainable via walking on routes. It is available shiny, though the other regional forms of Basculin are not. Any Pokémon Go ...

Earn the platinum Idol medal - Basculin (Red Striped) encounter Catch 100 Pokemon while in a party - Basculin (Blue Striped) encounter Catch a Pokemon on 21 different days - Basculin (White ...