What Pokémon is a blue fish?

What Pokémon is a blue fish? Basculin (Japanese: バスラオ Bassrao) is a Water-type Pokémon introduced in Generation V. Basculin has three different appearances: Red-Striped Form; Blue-Striped Form; and, in the Hisui region, White-Striped Form (which is considered a regional form).

Basculin (Japanese: バスラオ Bassrao) is a Water-type Pokémon introduced in Generation V. Basculin has three different appearances: Red-Striped Form; Blue-Striped Form; and, in the Hisui region, White-Striped Form (which is considered a regional form).