Abilities, Adaptability

7 species have Adaptability as a hidden ability, 4 as a normal one

Of the 1,025 species this site covers, default forms only

SinceGen IV

Normal4

Hidden7

Elsewhere9

Effect, in PokéAPI's words

“Increases the same-type attack bonus from 1.5× to 2×.”

As a hidden ability

Species	Slot	Note
Corphish	Hidden	Since Generation V
Crawdaunt	Hidden	Since Generation V
Feebas	Hidden	Since Generation V
Skrelp	Hidden
Dragalge	Hidden
Yungoos	Hidden
Gumshoos	Hidden

As a normal ability

Species	Slot	Note
Eevee	Normal	Since Generation IV
Porygon-Z	Normal
Basculin	Normal
Basculegion	Normal

Elsewhere in PokéAPI

9 more holders without a page here

Alternate forms and other species that PokéAPI lists with Adaptability.

Basculin Blue Striped, Lucario Mega, Beedrill Mega, Gumshoos Totem (hidden), Eevee Starter, Eevee Gmax, Basculin White Striped, Basculegion Female, Glimmora Mega