There are 10 designated rarity-scale tiers. The highest-huntable rarity tier for water-oriented spawns, such as those that are fished or encountered while surfing, is 8 (rare), where as tier-9 huntables are only found on land. Other methods of finding Pokémon, such as headbutting trees or digging, do not follow these tiers. The overall tier is determined by its lowest tier.

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