1- Create required config files
$ touch ~/.config/fish/config.fish; nano ~/.config/fish/config.fish
Now copy below:
set --export ANDROID_HOME $ANDROID/sdk;
set -gx PATH $ANDROID_HOME/tools $PATH;
set -gx PATH $ANDROID_HOME/tools/bin $PATH;
set -gx PATH $ANDROID_HOME/platform-tools $PATH;
2- Restart Terminal
3- Validate paths: $ echo §PATH