Default-form artwork 
Generation 5 · Pokédex profile
Hostile Pokémon
Pokédex entry
It used to be a common food source. The meat of red Basculin is on the fatty side and it's more popular with the youth. Its temperament is vicious and aggressive.
Battle data
Pokédex entry
It used to be a common food source. The meat of red Basculin is on the fatty side and it's more popular with the youth. Its temperament is vicious and aggressive.
Battle data
Pokédex entry
They form schools with others of the same color. The greatest foe of a school of blue Basculin is a school of red Basculin. Its flavor is light and inoffensive.
Battle data
Pokédex entry
While this ancient form of Basculin shares a vast array of qualities with other forms, it differs in several respects, including demeanor, being much gentler than others.
Battle data
No conventional evolution relationship is recorded for this species.
Conditional evolutions can require additional game-specific prerequisites beyond the displayed method.
| Method | Location | Level | Evidence |
|---|---|---|---|
| Surfing (rare)Form: Basculin Red Striped | Route 104 | Lv. 10–30 | Source-indexed, not individually verified |
| Surfing (rare)Form: Basculin Blue Striped | Route 119 | Lv. 5–35 | Source-indexed, not individually verified |
| Surfing (rare)Form: Basculin White Striped | Route 26 | Lv. 25–34 | Source-indexed, not individually verified |
Rare grass and Surfing encounters inherit the first native slot's level range. Supplemental fishing follows each rod's native slots. These ranges exclude Lure effects and randomizer replacements; eligibility restrictions still apply.
Data source: configured Grand Anthology Gen 1–9 species, forms and abilities. The website uses frame-cropped copies of the game's existing Pokémon sprites, which remain franchise/artist-owned assets. Some alternate forms use labeled default-form artwork when their individual sprite is unavailable. See acknowledgments for credits.