Rice Fish is an aquarium app of Japanese rice fishes.
Operations:
Feeding: Tap water surface.
Cleaning: Swipe dirty glass surface.
Touch: Each character reacts your touch. You can change layout of your aquarium by pushing root of weeds.
Menu: Long tap and help menu will appear.

Growing:
Characters will grow if you do cleaning/feeding once or twice a day.

Characters: There are 4 kinds of characters.
Rice Fish: Do both cleaning and feeding.
Weed: Do only cleaning. Grow by touching.
Snail: Does not do cleaning.

This app saves play data to iCloud every two minutes. You can download play data when you install this app to new device.
You can also view your own aquarium in 3D by "Rice Fish VR" app.