Excellent idea!!!! I teach an afterschool cooking class to kids. They loved the idea of it, however the fruit floated to the top and the fish sank to the bottom. Next time I will try just barely covering the bottom with jello, adding fruit, refridgerate, and then proceeding to add more later when adding the fish. Also, may want to use slightly more water than required. Hard to see through the dark blue color to the fish.