Virtual Pet Fish Anyone Know Where Can I Download A Virtual Fish?

Anyone know where can I download a Virtual Fish? - virtual pet fish

Somebody said you can have a pet as a screensaver (he said he had) a fish and must be fed every day if you forget, in the end dies or becomes ill, so I'm not looking for something online than Neopets closer to a downloaded version or what? to be no fish, no pets, which might.