Finver

Finver is a Pokémon introduced in generation 9

dex entry
garnet: there fangs can bite into food source. Finvers live deep sea where it is dark.

gem: there strong fins can now contract food sources. Since they gain a tail while evolving it can now go anywhere it wants.

evolution
Sehale —-> (lv.14) —-> Finver —-> (lv.32) Ocealord

origin
finver is fin and river together

it is based on a whale shark.