aniPet Koi Live Wallpaper simulates koi swimming in a pond with lily pads.

* 30 koi types
* Up to 15 koi in the pond
* Able to feed koi and koi grows
* Matured koi may have babies
* Random dragonfly and butterfly animation
* Background change
* Many options available, such as koi moving speed, growth speed, food type, lily pad moving speed, water color and transparency, etc.

To use:
HOME/MENU/Wallpaper/Live Wallpapers/aniPet Koi (free)

Works only for live wallpaper supported phones.

This limited free version only has 2 koi and without settings, but provides 2-day trial of the full features.