# Fishtank

![Fishtank icon](pwa-192x192.png)

Turn a shared screen into a living aquarium. Watch fish explore their surroundings, then use your phone to choose the inhabitants, feed them and change the scenery.

## Features

- Eight aquarium themes, from planted freshwater to glowing deep-sea displays.
- Choose fish populations, scenery, lighting, water flow and bubbles.
- Feed the inhabitants and watch them gather around the food.
- Several visitors can tend the same aquarium together without names or accounts.
- Hide the heading and QR panels independently for a quieter display.

## Set up and use

1. Open [Fishtank](/fishtank/) on your display.
2. Scan the QR code to open [Fishtank Control](/fishtank-c/appinfo) on your phone.
3. Choose a tank type and use the plus and minus buttons to change its population, up to 60 inhabitants.
4. Choose scenery, lighting and water movement, or tap **Feed the fish**. Allow eight seconds between servings.

Each tank type remembers its own population and scenery choices. Settings are remembered in the display's browser for that room; feeding is a temporary event. Keep at least one aquarium display open while using the controls. Click the display to toggle fullscreen where supported.

## Choose an aquarium

- **Freshwater:** angelfish, discus, gouramis, tetras, guppies and corydoras, with shrimp and a snail. Choose Planted, Castle or Shipwreck scenery; the scenery can cycle every five minutes.
- **Bioluminescent:** artistically enhanced luminous fish and fins against the dark Luminous Garden or Violet Grotto.
- **Coral Reef:** clownfish, tangs, chromis, royal grammas and fire gobies among swaying corals in Coral Lagoon or Reef Arch.
- **Jellyfish:** six kinds of drifting jellies, with Midnight Glass or Velvet Dusk scenery and plankton to feed them.
- **Japanese Garden:** six koi-inspired colour varieties, pale gravel, mossy stones and falling maple leaves in Stone Path or Moss Islands.
- **Amazon Blackwater:** tea-coloured water, roots and fallen leaves, with six fish species in Root Cathedral or Leaf Lagoon.
- **Seahorse Garden:** six colour varieties that hold onto stems, swim and settle again in Seagrass Meadow or Willow Garden.
- **Rocky Cichlid:** six colourful varieties that patrol territories and retreat into shelters in Limestone Caves or Slate Terraces.

This is a decorative aquarium with imaginative animation, rather than a biological simulation.

## Screenshots

![Planted Aquarium](screenshot.jpg)