You can obtain fruit for your Chao in the following ways:
 Playing the fruit matching mini-game  Finding a treasure chest [*] Finishing an adventure.
Note that you will also recieve a treasure chest when you win a fight against a Bully Chao. If you lose the fight, the Bully Chao will take a fruit from you!
You can store 8 items in your inventory that can be taken back to the Chao Garden to be given to your Chao.
Fruits You can obtain fruit via the matching game or in chests during the game. Please see the fruits section for the full list. This is the fastest way to boost your Chao’s stats.