Starmie

Starmie is a Water-type Pokémon from Kanto region. It evolves from Staryu when fed with 50 candies.

Pokédex description
Mysterious Pokémon

''Starmie's center section—the core—glows brightly in seven colors. Because of its luminous nature, this Pokémon has been given the nickname “the gem of the sea.''

Evolution family
Starmie is the part of a two-member family.

Trivia

 * On August, 2016, its attacks Quick Attack and Psybeam were replaced with Tackle and Psychic respectively.