Shiny Pokémon

Shiny Pokémon are extremely rare Pokémon that have, color variation that differs them from their regular appearance. These color variations may range from minor hue adjustments to completely new palettes. Only one shiny coloration exists for each Pokémon species.

In the Map View and tracker, Shiny Pokémon are shown in the regular coloration until they are see on the encounter screen or on the summary page, where they have an aura of stars around them and their different coloration is visible.

Once a player captures a shiny Pokémon, their Pokédex will show that they have captured it and additional switch buttons for shiny forms will get unlocked in specific Pokédex entry.

Available Shiny Pokémon
Currently there are only few Shiny Pokémon in game that are available to be captured.

Kanto=

Unavailable Shiny Pokémon
Also there are few Shiny Pokémon that are currently in game but they're not available to be captured.

Kanto=

Trivia

 * A shiny Pokémon may not appear shiny to nearby Trainers.
 * Shiny Pokémon cannot be batch-transferred, and Trainers will be notified if they try to transfer them.
 * Shiny Pokémon remains shiny after being evolved.
 * Also Pokémon cannot become shiny via evolving non-shiny one.
 * In the main Pokémon series, the Gold and Silver versions were the first games to introduce shiny Pokémon.
 * The first available Shiny Pokémon in the game is Shiny Magikarp, that began appearing on March, 2017.
 * It might be reference to original game series as Shiny Gyarados, located at the Lake of Rage, was the Pokémon used to introduce Trainers to shiny Pokémon.
 * Shiny Pikachu began appearing on the first day of the Pokémon GO Park event, in Yokohama, Japan.
 * Shiny Sableye began appearing on the first day of the Halloween event of 2017.
 * Shiny Duskull began to appear six days into the event, on October.
 * Shiny Shuppet began to appear 11 days into the event, on October.
 * Unlike the case with seeing regular Pokémon in the Gym, seeing Shiny Pokémon in the Gym for the first time, before capturing them, won't unlock the Pokémon's shiny form switches in Pokédex summary page.
 * There are also no file assets for form switches of only-seen Shiny Pokémon in Pokédex.
 * Registering a shiny Pokémon will also register the non-shiny form to the Pokédex, if the Pokémon was not previously registered.
 * During the Halloween event in 2017 there were shiny forms of Gastly's family members added to game data, although they weren't released to be caught in gameplay.
 * Along with release of 50 selected Pokémon from Hoenn region on December, there were added to game data all of the sprites for shiny forms of these Pokémon.
 * Shiny Snorunt began appearing on the December, 2017 along with release twenty Water and Ice-type Pokémon from Hoenn-region and Delibird.
 * Shiny Zapdos was temporally available from Raid Battle due to game creators' mistake.
 * The most of available Shiny Pokémon come from Hoenn region.