A little aquarium for your browser

Turn your screen into a little underwater world. Fishoid is a free, customizable pixel art aquarium to leave running in your browser while you work, read or relax.

If you enjoy fireplace videos or other ambient backgrounds, try an aquarium that keeps moving in your browser. Choose a theme and make it your own, fullscreen or on a second monitor.

No account or download is needed to enjoy the aquarium. There are no chores or progression to keep up with.

Open aquarium

Best enjoyed at 1080p on a laptop screen or larger.

Explore the themes

Colourful fish swimming over a sandy seabed among sunken Atlantis ruins.

Atlantis

Free

Colourful fish, swaying plants and sunken ruins.

Halloween fish and eerie decorations in a dark underwater scene.

Halloween

Free

Pumpkin fish, ghostly creatures and a spooky underwater world.

Tentacled creatures and strange fish among the ancient ruins of the Nameless aquarium.

Nameless · Beta

Free · In development

Strange creatures and ancient scenery for an unsettling aquarium.

Biomechanical fish beside a pale sculpture and submerged industrial architecture.

Biomech

Supporter extra

Biomechanical fish, sculptural forms and a darker underwater world.

Make it your own

Open settings with ⚙ to choose a theme and adjust the fish, creatures, scenery and lighting. Use “Copy aquarium link” to share your theme and settings. Supporter extras require a separate unlock in each browser.

Support Fishoid

The core aquarium is free. Optional support helps cover hosting, new artwork and development. As a thank-you, supporters unlock the Biomech theme and the Biomech and Odyssey fish and object sets.

$10 suggested, once. Any amount unlocks the same supporter extras.

Support on Ko-fi ↗. Have a supporter code? Enter it in the aquarium’s support dialog.

How it is made

Fishoid combines generated artwork with procedural scenery and animation that runs in your browser. AI tools assist with artwork and code; the scenes, movement and settings are shaped through ongoing selection, editing and testing.