Can my fish die of hunger?

No. The fish never die from hunger or dirty water, they just become unhappy and stop earning coins. Only predators eat other fish.

Upgrading to a bigger tank, which holds more fish.

Yes. It is kept in your browser on this device, and it catches up on a little of the time you were away.

Aquarium Sim

A calm fish tank to look after: add fish, feed them, keep the water clean and earn coins for a bigger tank. Keep predators away from small fish.

Aquarium Sim

0% · Getting ready

A real run of the game, recorded with captions and no sound.

Pick a species to add a fish to your tank. The starter tank holds 6, the family tank 10 and the grand tank 16.
Fish get hungry and dirty the water as time passes. Press Feed when hunger is high and Clean water when the water clouds.
A clean, fed, peaceful tank earns coins. Spend them on a bigger tank with Upgrade.
Octopuses and sharks eat small fish: if you mix them, the small fish start to disappear. Remove a fish with its bin button.

Controls: mouse or touch. Made by CalcoTools.

Add fish a few at a time: each one makes the water dirty faster.
Feeding also clouds the water a little, so clean after you feed.
Predators are fine on their own or with fish of their own size.
Your tank keeps running for a while when you leave, and is saved on this device.

Can my fish die of hunger?: No. The fish never die from hunger or dirty water, they just become unhappy and stop earning coins. Only predators eat other fish.
What are coins for?: Upgrading to a bigger tank, which holds more fish.
Is my tank saved?: Yes. It is kept in your browser on this device, and it catches up on a little of the time you were away.