I made a Tamagotchi Pix Growth Chart! based on the information I could find on Tamagotchi Wiki. This isn't a complete growth chart, we don't know all of the adult characters yet,
Tamagotchi Original VS Tamagotchi On: The Evolution
Tamagotchi Madness - Tamagotchi Connection Version 4.5 - Wattpad
Tamagotchi connection v4.5 growth chart
Welcome to Gotchi Garden! ❀: v4 and v4.5 - General Guide