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How to evolve Hisui Qwilfish into Overqwil in Pokémon Legends Arceus

How to evolve Qwilfish's new Hisuain form!

Hisui Qwilfish can evolve into Overqwil in Pokémon Legends: Arceus.

Like all of the Hisuian variants, Hisui Qwilfish has a new typing - dark and poison-type - compared to its Gen 2 original. It's evolution, Overqwil, also debuted in Legends Arceus.

Below you'll learn how to evolve Hisui Qwilfish into Overqwil, along with where to find Hisui Qwilfish if you haven't caught one yet.

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Pokémon Legends: Arceus Eurogamer Reviewscast

If you'd like to learn more about the game, visit our Pokémon Legends: Arceus walkthrough.

Hisui Qwilfish locations in Pokémon Legends: Arceus

Hisui Qwilfish can be found in the water of two biomes in Pokémon Legends: Arceus - Obsidian Fieldlands and Cobalt Coastlands.

In the Obsidian Fieldlands, you'll find Hisui Qwilfish swimming around Ramanas Island. Meanwhile, in the Cobalt Coastlands, you'll find this Hisui variant in Tranquility Cove, Lucker's Lair and Islespy Shore.

The locations of Hisui Qwilfish in Pokémon Legends: Arceus.

Our Pokémon Legends Arceus walkthrough will help you pick a starter Pokémon and win the Kleavor boss fight. You’re also tasked with filling the Hisui Pokédex by obtaining new evolutions like Kleavor by evolving Scyther, Wyrdeer by evolving Stantler, Sneasler by evolving Hisui Sneasel and Overquil by evolving Hisui Qwilfish. There’s a host of new evolution methods, including ones for the Eevee evolutions. Take the time to complete Requests too, such as The Sea’s Legend, Wurmple’s Evolved! and finding the Wisp locations. Don’t forget to track down every Unown location too.

How to evolve Hisui Qwilfish into Overqwil in Pokémon Legends: Arceus

To evolve Hisui Qwilfish into Overqwil - a dark and poison-type - in Pokémon Legends: Arceus, you need to use Barb Barrage in Strong Style 20 times.

After achieving this feat with a Hisui Qwilfish, you'll be able to evolve it whenever you like.

Hisui Qwilfish learns Barb Barrage at Level 15 and the move is mastered at Level 25. Remember - if the Hisui Qwilfish you catch is Level 15 or above and doesn't have Barb Barrage in its moveset, you can add it back in using the 'Change move' function.

If you don't want to wait till Level 25, you can always give Zisu at the Jubilife Village Training Grounds a Seed of Mastery and she'll master the move early for you.

If you'd like to learn more about evolution methods in Legends: Arceus, visit our guides on the Eevee evolutions, along with how to evolve Stantler into Wyrdeer, Hisui Sneasel into Sneasler, Johto Sneasel into Weavile, Hisui Growlithe into Hisui Arcanine, Scyther into Kleavor and how to get Black Augurite.

Good luck evolving your Hisui Qwilfish!

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Lottie Lynn

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Lottie Lynn is Eurogamer's Guides Editor. She likes exploring new games and still has nightmares about the moon from Majora's Mask.