Can Rosy Red Minnows Do Well in my clean retention pond?

I live in Northern Idaho that is 20 feet wide and 30 feet long and it is 4feet deep when snowmelt fills it up in the spring. it holds 14600 gallons when full. it has millions of cattails in it with a few other plants.This retention pond has clean water with no chemicals or trash whatsoever and also it is in the mountains in the country not the city.The winters up here are very cold and snowy and the summers are hot and it rains every week or two weeks in the summer. At the end of august there is not that much water in there mabye about a few hundred gallons. is this pond stagnant? can rosy red minnows or fathead minnows do well in this pond?what fish can do well in this pond?in the fall the pond fills up again.If you answer i will give you 5 points for best answer if you answer all my questions fairly!! thanks:)