Relicanth

Relicanth is a Water, Rock-type Pokémon from Hoenn region. It does not evolve into nor from any other Pokémon.

Pokédex description
Longevity Pokémon

''Relicanth is a Pokémon species that existed for a hundred million years without ever changing its form. This ancient Pokémon feeds on microscopic organisms with its toothless mouth.''

Evolution family
Relicanth is the part of a one-member family.

Trivia

 * Relicanth is a Region-exclusive Pokémon in the Oceanic region within the UTC+13:00 Timezone (New Zealand and Fiji).