Reefling

Reefling is a see-through aquarium that sits in a corner of your screen while you work or play. Fish swim through glowing water, with your desktop visible behind the tank. Clicks pass through it so it does not block what you are doing.

Care for your fish

Click anywhere in the tank to drop food, and the fish swim over to eat. While the tank is open, you slowly earn shells, with a small bonus for feeding. Spend shells in the Store on a collection of over 150 pixel-art fish species. More species appear the longer you play, so the collection fills out over weeks rather than in one long sitting.

Decorate the tank

You can add seaweed, kelp, coral, sea fans, rocks and shiny shells. You can name or rename any fish, and a day-and-night cycle shifts the water from bright noon light to deep blue night. As your community grows, the tank becomes livelier and a little bigger.

A relaxed companion

Fish never starve, so you can leave the tank alone for hours or days without harming them. Soft aquarium sounds play in the background, and the interface fades when you are idle. The tank can stay on top of other windows, while clicks pass through it.