PokéBase - Pokémon Q&A
0 votes
196 views
by
"Starting in Generation V, Pokémon in the Pokédex will appear Shiny if the first specimen of that Pokémon encountered was Shiny."

Source: https://bulbapedia.bulbagarden.net/wiki/Shiny_Pok%C3%A9mon#In-game_Shiny_Pok.C3.A9mon_4
You can still see the Shiny form in the formes section of the Pokedex in generations before that.
Gen four onwards, at least

Not Gen 2.

I’m not sure about Gen 3
I'm pretty sure Gen 3 but once I get a source I will answer

1 Answer

0 votes
 
Best answer

Kiawe's source is correct. I just checked Diamond (Gen 4) and Ruby (Gen 3) on GBA & DS emulators. It isn't possible until Black/White.

The form difference section will now show Shiny Pokémon as well as
form differences. The last sprite selected will become the one
displayed in the main entry.

List (Main Series)

Black/White
Black 2/White 2
X/Y
Omega Ruby/Alpha Sapphire
Sun/Moon
Ultra Sun/Ultra Moon
Let's Go, Eevee!/Let's Go, Pikachu!
Sword/Shield
Brilliant DIamond/Shining Pearl
Legends: Arceus

Source

by
edited by
Okay, thanks.