Fish prompt based on the minimal theme from oh-my-zsh. Put following code at the end of ~/.config/fish/config.fish. http://i.imgur.com/o7rOlRv.png

config.fish

set fish_git_dirty_color red
set fish_git_not_dirty_color white

function parse_git_branch
  set -l branch (git branch 2> /dev/null | grep -e '\* ' | sed 's/^..\(.*\)/\1/')
  set -l git_status (git status -s)

  if test -n "$git_status"
    echo (set_color normal)$branch(set_color $fish_git_dirty_color)●(set_color normal)
  else
    echo (set_color $fish_git_not_dirty_color)$branch(set_color normal)
  end
end

function fish_prompt
  set -l git_dir (git rev-parse --git-dir 2> /dev/null)
  if test -n "$git_dir"
    printf '%s%s%s [%s] » ' (set_color $fish_color_cwd) (prompt_pwd) (set_color normal) (parse_git_branch)
  else
    printf '%s%s%s » ' (set_color $fish_color_cwd) (prompt_pwd) (set_color normal)
  end
end

function fish_right_prompt
    printf '[%s%s]' (set_color normal) (date +%H:%M:%S)
end