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,
V5.5 | NeoMametchi Logs
Welcome to Gotchi Garden! ❀: Tamagotchi Fantasy Meets - Growth Chart
Tamagotchi Music Star Growth Chart - Music Star Growth Chart | Growth chart, Music star, Secret characters
Welcome to Gotchi Garden! ❀: Tamagotchi Plus Color (TMGC+C) - Growth Chart
Welcome to Gotchi Garden! ❀: v4 and v4.5 - General Guide
Tamagotchi Connection Version 4.5 | Tamagotchi Wiki | Fandom