# Fishtank Control

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

Tend a shared [Fishtank](/fishtank/appinfo) aquarium from your phone. Several visitors can change the same tank together, with no account or name required.

## Features

- Switch between eight aquarium themes, each with its own remembered choices.
- Add or remove inhabitants with large plus and minus controls.
- Feed fish, jellyfish or seahorses and watch them follow the food.
- Adjust scenery, lighting, water flow, bubbles and display panels.

## How to use

1. Open Fishtank on the shared screen and scan its QR code.
2. Choose **Tank type**: Freshwater, Bioluminescent, Coral Reef, Jellyfish, Japanese Garden, Amazon Blackwater, Seahorse Garden or Rocky Cichlid.
3. Use the plus and minus buttons to change the population. A tank holds up to 60 inhabitants.
4. Choose the scenery and lighting, adjust the flow, or switch bubbles on or off.
5. Tap **Feed the fish**, allowing eight seconds between servings.

The available species and scenery change with the tank type. You can also hide the heading and QR panels independently. For a guide to the themes, see [Fishtank](/fishtank/appinfo).

Keep at least one aquarium display open. Your controls show the shared tank's choices and update after reconnecting. If a change is not confirmed, check the display before trying again.

## Screenshot

![Connected phone controls showing the tank themes, feeding button and fish populations](screenshot.jpg)