Shiny Pokémon are Pokémon that have an unnatural coloration. The coloration can be mild—only a few shades darker or lighter than the original—or drastic. They are not to be confused with Boss Pokémon, which are tinted differently than Shiny Pokémon. Each Pokémon has a very rare (1 by default) chance of being Shiny, and Shiny Pokémon are much sought after for their unique look and rarity. A Shiny coloration gives no advantage in battle, however. A Shiny Pokémon will emit particles and have a star under its level while in battle with a trainer. Wild Shiny Pokémon will not engage in battle with other wild Pokémon.
If two breeding Pokémon have differing original Trainers, their Eggs have double the normal chance of hatching into Shiny Pokémon.
Images of the Shiny forms of each Pokémon can be found here.
- "Shiny spawn rate": The rarity of Shiny Pokémon spawning in the wild (1).