A variant of Magikarp only found in the Kuria region. In ancient Kuria, the waters were extremely harsh, so some families of Magikarp have taken a different form on birth. This allows for some of the power of its evolution to be accessed immediately so they could survive.

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While normal Magikarp are still plenty, sometimes these rare Magikarp are still found, despite the waters of Kuria being a lot calmer than they were thousands of years ago. These Magikarp are way more powerful than normal, but also evolve later than normal.

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While the end result is the same as normal Magikarp by eventually evolving into a normal Gyarados, only Kurian Magikarp can learn the new powerful Physical Water-type Attack, "Tidal Splash". This move allows it to attack with a powerful splash that also makes it rain. Combining this with Swift Swim makes it pretty powerful.