How to use the aquarium screensaver
- Open the page; the fish start swimming at once.
- Set Fish, Speed, Bubbles and Light rays the way you like.
- Switch on Night mode or Show clock if you want them.
- Press Fullscreen or F, then leave it running. Esc brings the page back.
It works online in any modern browser, on a PC, a laptop, an iPhone or a TV.
On a TV, office monitor or waiting-room screen
A smart TV’s own browser is the simplest route: open the page and press F. You can also cast a browser tab from a computer or phone, or plug a laptop into the TV over HDMI. Roku has no web browser (Roku support), so mirror a phone or computer to it (screen mirroring) and open the page there. On Fire TV, use Amazon’s Silk browser. Leave Keep screen on switched on in Settings, and add the clock on office or waiting-room screens. Streamers can use Copy OBS link for a silent “be right back” scene, or the green screen for keying.
Roku, Fire TV, Samsung, LG and Google are trademarks of their owners; HugeTimer isn’t affiliated with them.
Night mode and the clock overlay
Night mode dims the tank to about 40 % and tints it blue, for a dim room or a late evening. Brightness dims it further in 5 % steps. Show clock adds hours and minutes, in 12- or 24-hour format, and moves to a new corner every 5 minutes. Want the time big and without fish? Open the flip clock or the clock.
Light on battery and data (no video)
The page loads once and then downloads nothing more, while a 10-hour aquarium video streams for as long as it plays. Drawing is capped at 30 frames a second and stops completely in a hidden tab. The screen itself uses the most power, so dim it, try Night mode and plug in for long runs. On OLED screens, darker scenes generally need less power.
Options explained
| Option | Default | What it does |
|---|---|---|
| Fish | 8 | 3 to 20 fish, from your own tank |
| Speed | 1× | 0.5×, 1× or 1.5× |
| Bubbles · Light rays | on | bubbles from two spots · slow light shafts |
| Night mode · Show clock | off | dimmer blue tank · the time in a corner |
| Brightness | 100 % | dims the whole scene |
| New tank | — | new fish, plants and rays |
| Pause | — | stops the motion; Space does too |
Share links to your exact tank, and Copy OBS link gives a scene-only view for streaming software.
How the fish are drawn
This fish aquarium screensaver is drawn by code. Each fish is built from simple shapes, an oval body, a swinging tail, fins and an eye, in six color schemes, from tangerine with white bands to silver with a dark stripe. Far fish are smaller and slower, so the tank has depth. A random number picked when you first open the page builds your tank, and a shared link shows exactly the same one. There are no images and no video.
Tips and limits
- It isn’t a system screensaver: Windows 11 or a Mac won’t start it when idle. Open the page and press F.
- Battery saver modes may block Keep screen on.
- TV browsers differ, so try yours before a party or an event.
- Burn-in care lowers the risk on OLED screens; it can’t guarantee against it.
- Want light rather than fish? Use the screen light. Party colors? Try the disco light.
FAQ
How do I put the aquarium screensaver on my TV?
Open this page in your smart TV's web browser, cast a browser tab from a computer or phone, or connect a laptop over HDMI, then press Fullscreen or F. Roku TVs have no web browser, so mirror a phone or computer screen to the Roku instead and open the page there.
Is this aquarium screensaver free?
Yes. There's no sign-up, no download and no subscription; the tank runs in your browser for as long as you like. The site is paid for by ads, which sit below the tank on the page and never appear on the tank itself or in fullscreen.
Does it have sound?
No. The aquarium is silent by design: there's no bubbling, no music and no audio code in the page at all, so it can never start making noise on its own. If you'd like sound, play your own music or ambient track alongside it on any device you choose.
Are the fish real or a video?
Neither. Every fish, plant, bubble and light ray is drawn live by code in your browser, from simple shapes. That's why it can run for hours without streaming anything. Press New tank and the code builds a different set of fish, plants and rays.
Does it use a lot of data or battery?
Data, no: after the page loads, nothing more downloads, while a long aquarium video streams the whole time. Battery depends mostly on the screen itself. The tank draws at most 30 frames a second and stops in hidden tabs; dim it or use Night mode, and plug in for long runs.
Can I add more fish?
Yes, from 3 to 20. Use the + and − buttons next to Fish, or the up and down arrow keys. Your tank keeps the same fish as you change the number: 5 fish are always the first 5 of your 20. On an older phone, fewer fish keep the motion smooth.
Can it show the time?
Yes. Switch on Show clock or press C for hours and minutes in a corner of the tank, in 12- or 24-hour format following your settings. The clock moves to a different corner every 5 minutes, so the digits never sit in one place on your screen for hours.
Will it damage an OLED screen?
Static images left on screen for a long time are what can cause burn-in on OLED panels. Here the fish and bubbles keep moving, the whole scene shifts by a pixel every minute and the clock changes corners. That lowers the risk but can't rule it out, so keep your TV's own panel protection on and don't leave it paused.
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