As a general rule the more species present the harder it is to manage for goals. If all natural (put them in and see where nature takes it) is a goal then just go for it and see what happens. If you want trout as your goal then learn as much as you can about the species (especially food sources and reproduction) and set the pond on that course.


Assuming all natural is not your goal then I don't see how you manage all the mentioned species toward a goal of good trout pond. Way to many variables to get and maintain that goal.