A peaceful reef tank with tropical fish, swaying plants and drifting light.
A calm reef tank on your idle screen. Tropical fish swim at different depths, turn at the glass and wag their tails, plants sway, bubbles rise and sun rays drift through the water.
Choose how many fish, a tropical reef, deep blue or green lagoon look, and whether to show bubbles and light rays.
Use it on your Mac
- Get SCRNSVRS free from the Mac App Store.
- Select Aquarium in the library.
- Click Set as Screensaver or Set as Wallpaper – or both.
Free · macOS Tahoe 26 or laterNeed a hand? Read the setup guide.
Aquarium FAQ
How do I set Aquarium as my screensaver on a Mac?
Install SCRNSVRS free from the Mac App Store, select Aquarium in the library and click Set as Screensaver. macOS starts it whenever your Mac is idle, exactly like a built-in screensaver.
Can I use Aquarium as a live wallpaper?
Yes. Click Set as Wallpaper in SCRNSVRS and Aquarium plays on your desktop behind your windows and icons. You can use it as screensaver and wallpaper at the same time.
Is Aquarium free?
Yes. Aquarium is Free Forever in SCRNSVRS – no account, no ads, no subscription.
Is Aquarium a video loop?
No. Aquarium is rendered live on your Mac with Metal, so it never repeats and stays sharp on any display size. The clip on this page is a screen recording of the real thing.
Will Aquarium slow down my Mac or drain the battery?
No. SCRNSVRS drops to 30 fps on battery and stops rendering when the wallpaper is covered by a full-screen app, so Aquarium costs next to nothing in everyday use.
Which Macs does Aquarium run on?
Aquarium needs macOS Tahoe 26 or later.
