Theme Aquarium is a simulation game released for the Sony PlayStation in Japan. The title places the player in the role of an aquarium designer and manager where they must select fish species, arrange decorations, and maintain water conditions such as temperature and filtration. Players can feed the fish, clean the tank, and breed new specimens to expand their collection. The game features a variety of marine life including clownfish, angelfish, seahorses, and sharks each with unique behaviors and care requirements. The simulation emphasizes resource management as players must balance food supply, waste removal, and oxygen levels to create a healthy ecosystem. A scoring system rewards players for achieving ecological balance and obtaining rare fish. An exhibition mode allows players to showcase their aquariums and compete for high scores. The interface provides a top down view of the tank with menus for selecting actions and adjusting settings. The game was added to iOctavio.com on 2002-11-18.