There's a live wallpaper for everyone, and if you're looking to be soothed by a tranquil, digital koi pond, then this is the one for you.
Koi Live Wallpaper does exactly what the name implies: puts up a koi pond with fish swimming around in it. At first glance it's just decent. The background image doesn't look quite right and the fish look a little too pixelated and on the foreground for it to settle correctly. Fortunately, once you actually select the wallpaper, it's harder to notice those details.
You're able to create ripples on the screen by tapping, although it doesn't do much (anything) to the fish. A double-tap drops some food flakes into the water and all the fish come out to eat some grub. It's a nice little bit of interactivity that at least offers some moments of entertainment.
One of the strongest parts of the wallpaper is its settings menu. The settings menu is only available if you buy the donate version, but it's pretty comprehensive. From the settings menu you can choose your ideal background, modify things like rain speed (if any), plants in the water (if any), and edit your fish.
The fish editing is probably the coolest single option, if only because it showcases how many different koi you can have, and you can edit their sizes, too. The wallpaper defaults you around six fish (and only two or three colors) when you first download, but I quickly changed that.
The Koi Live Wallpaper is free in the Android Market, or, if you've just gotta have access to the settings menu, 99 cents. We've got download links and more screenshots after the break.