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A blueish regional variant of relicanth with different scale patterns. It would still be water/rock, but in this hypothetical region, it would be extinct so it would have to be revived from a fossil. The kicker is that it would evolve into a pokemon version of pic related, a trait that was lost over the eons in its hoenn cousins.
The evolution would also probably be water/rock and might be named relisteus or something similar