Fish Tank Plus

Fish Tank Plus (formerly Ultra Aquarium) is a living 3D fish tank for Windows 10/11. Use it as a screensaver, as live wallpaper behind your desktop icons, or full screen whenever you want to sit back and watch. With more than one monitor it becomes one big tank: the fish swim from screen to screen, and bezel correction lines the picture up across the gaps.

It's now on the Microsoft Store (Microsoft-signed, trusted one-click install, automatic updates): https://apps.microsoft.com/detail/xp8c5d95n4q26p

Pick your scene: the Glass Tank, a huge public-aquarium tank in a dark, grand hall with plaques of real fish photos and a resident shark doing slow laps past the glass, or the open sea, a coral reef with Octopus Boy, manta rays, sea turtles and whales passing through. Real 3D is the showpiece: with your webcam on, it's like looking into a real aquarium. Lean, stand up or get close and the tank moves with you.

New in 8.0: fish sticks. Earn one for every minute your tank fills the screen and unlock new fish and ornaments, from a treasure chest and a seahorse to a swordfish, a sunken lighthouse and a golden Octopus Boy, plus 34 achievements that pay out bonus fish sticks.

Free, no ads. Not on Windows? It also runs in the browser at https://fishtankplus.com on a Mac, Chromebook, phone or tablet.