Ertain next non game DS title, Kokorogauruou Mirei Aquarium DS is a portable aquarium in your pocket minus the water. It looks like a 3D After Dark screensaver, but there is some interactivity. You have to care for your fish by cleaning the tank with the stylus and you have to feed your fish. Kokorogauruou Mirei Aquarium DS comes in two versions your typical aquarium (guppies and tetrapods) or an “exotic” blend with whales and penguins. If you know someone with the other version you can trade pets and the video demonstrates a penguin’s move to a tiny home tank. Etrain’s aquarium project comes out on March 29, 2007 in Japan. I might pick this up, but which version should I get killer whale or guppy?