It's not fake...and don't call it a "PokeTama" it looks nothing like a Tamagotchi and I have one it's nothing like a Tamagotchi.
And the Pikachu thing....that is NOTHING AT ALL like a Tamagotchi. I have one of those too and I'm running one right now. It's a Pedometer pet, it takes care of itself and does cute animations throughout the day. You walk to get watts to make him happy and grow your friendship. Neglect him and he calls you "Meanie" D=