Trying to set a keyboard shortcut to the fish shell desktop application

How can one open the **fish terminal** with a keyboard shortcut like ctl-alt-t in the **gnome desktop environment** running on **debian**? Steps I have taken: 1. Installed the **fish shell** and run it from **gnome-terminal**. 2. Successfully run the **fish shell terminal gui** from the **applications** list in settings>applications. 3. Checked the **fish.desktop** file in /usr/share/applications to find the exec command

[Desktop Entry]
Version=1.0
Type=Application
Terminal=true
# This file is for use in appimages, which rewrite the path.
# Other uses would have to replace these with the correct path.
Exec=fish
Name=fish
Comment=The user-friendly command line shell
Icon=fish
# "Shell" would be the proper category, but it's reserved so we can't use it.
Categories=ConsoleOnly;System;

4. Created a keyboard shortcut under Settings>Keyboard>Keyboard Shortcuts>View And Customize Shortcuts>Custom Shortcuts>Set Custom Shortcut But pressing ctl-alt-t doesn't open the fish terminal.