I took a picture of a pond of smilar fish over in Japan. I should have snagged a few. However, I would not attempt to give a fish mouth-to-mouth. Some things are wrong in this world, and that’s one of them.
I’m pretty ignorant about fish anatomy (I’m not even sure I can spell anatomy), but… Doesn’t a fish breathe through its gills anyway? If so, giving it mouth-to-mouth might not have been productive. Mouth-to-gill? :P