Thank you thank you snrub! I'm not trying to be the naysayer, probably if puddles of water everywhere 'show up' with minnows then there has to be a scientific reason.
In the old days many of the living things that were hard to see were proven by simple experiments by setting up an item that didn't seem to have any of them in it, putting it in a controlled environment and later finding living things crawling out of it after a while and then connecting the dots.
I would think in warm weather climates in the south people from many states and many climates could try this. Dig a hole, or identify a drainage dip that is dry, let it fill with water (rain water, ground water, it might make a difference!) and then observe.
Of course to observe you would have to have a pretty good camera system that can watch it day and night! At least it should be a fun experiment.
