I'm sorry, but you can't catch Pichu in Pokémon Black / White. To get Pichu on Pokémon Black / White, you need to use Poké Transfer.
You can't catch pichu in Pokemon emerald,But you can get a male pikachu and a female pikachu or a ditto and breed them, When the egg hatches it will be a pichu
You can't catch Pichu because you have to breed him at the Old Man or Old Lady.
nope
I don't think you can actually catch a pichu but you can catch a pikachu at Viridian Forest and breed it with a ditto.
You can't pichu ever, to get one breed pikachu or raichu.
You cannot catch a wild Pichu. You first must catch a Pikachu, which can be found rarely in the Viridian Forest. Then, breed that Pikachu, and the egg will produce a Pichu.
First of all you CAN'T catch the Pikachu-Colored Pichu. You will have to get the event for it and transfer it over when they release it in your country.
In order to catch the Spiky-eared Pichu, you first need the event Pikachu-colored Pichu that Nintendo released either at U.S. GameStop stores or via Nintendo Wi-Fi Connection. Once you have this specific Shiny Pichu, the Pikachu-colored Pichu, you need to have it as the lead Pokémon in your party and then you have to go up to the shrine in Ilex Forest and then you'll be given the Spiky-eared Pichu. There is no need to catch it.
That is a fairy tale
no, only pikachu can
you would have to get a pichu egg by breeding a female pikachu or raichu with a pokemon of the same egg group