You are correct the 1st one is a common shiner. They will not spawn successfully in a pond unless you have moving water such as a water falls. A sump pump pushing water parallel & along a rocky shore may work to get hatched eggs during their spawning season in the pond.
2nd picture is blurry. I think it might be a northern redbelly dace.
http://www.seagrant.wisc.edu/home/Default.aspx?tabid=605&FishID=95But with a blurry picture, it could be any minnow with a lateral stripe.
Note how clear the ruler is in the 1st pic compared to the 2nd pic.
Congratulations on getting the wild perch to eat pellets. You will notice very good growth of those that eat pellets. Some will become 12"-14".
