From Miley Answers:
My friend and I had a dispute. I say that Pikachu has three stages of development and he was immediately in the second phase. Pichu - Pichu - Raichu And he claims that there are only two stages.Picachu - Raich. Pichu is very similar to Pikachu and it is written on some forums that this is his evolutionary form.

<Criptok>: What are you doing? I was chewing the peel at that moment.