fusion-icon software package provides tray icon to launch and manage Compiz Fusion, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fusion-icon
fusion-icon is installed in your system.
Make ensure the fusion-icon package were installed using the commands given below,
$ sudo dpkg-query -l | grep fusion-icon *
You will get with fusion-icon package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | fusion-icon |
| Version | 0.1.0-3ubuntu1 |
| Description | tray icon to launch and manage Compiz Fusion |
| Sub Section | X204 |