Fishland.com: The best virtual pet site ever!!! Greatest cartoons! Guaranteed entertainment =) Create your fish, feed him, play with him, go to the school, fight with other fishes and much more! Win "aurux", virtual points, and become the richest pet in Fishland.
Virtual Fishtank: Design virtual fish and release them in a virtual fish tank.
Insaniquarium: Interesting virtual aquarium game where well tended fish drop coins you can use to buy more fish and stuff.