The fish_user_paths are the alternative for $PATH in fish shell.

But how do I find out, what’s in my fish path?

echo $fish_user_paths | tr " " "\n" | nl

This gives you an array of path environment variables.

You can erase a path with set -e fish_user_paths[1].

Be aware that the array is mutable, so if you delete an item, another one will take its place.

Further Reading