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.