Charlie,

First and foremost, welcome to Pond Boss!

Check out the thread, http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=145899#Post145899

Lists all species of forage fish one can use in a pond. So you know what the options are...

If you have access to wild lake chubsuckers, I would strongly consider catching some and putting them in your lake.

I am sure many others will give you their advise as well.