3d aquarium fish screensaver features schools up to 100 salt-water or fresh-water fish swimming among bubbles within beautiful underwater backgrounds at the same time. virtual aquarium screensaver allows you to choose among 3 beautiful salt-water fish tanks, 3 fresh-water aquariums or you can turn them into sea bottom. underwater screen saver displays the digital clock with time in a 12/24-hour format and calendar. enjoy the bubbles sound or waves sound this fish screen saver emits. this tropical fish screensaver allows you to choose from 5 salt-water fishes or 5 fresh-water fishes. you can set the number of fishes or bubbles, customize as fish swim their way around and change the underwater background with very soothing underwater effects. if you have multi-monitors, you can display 3d aquarium screensaver on them via settings of your virtual desktop. the screen saver does not include any third party software, spyware, adware or viruses.