Hello Brian, It seems like you have quite a diverse fish population, and as Theo suggested minnows could be expensive with all those adult fish around. You mentioned you had sunfish & perch , maybe if you added more structure to your pond it would allow them to increase your forage base, and continue to feed pellets to take the pressure off them.
I have golden shiners, and they have done well, but with your clear water I think adequate structure is gonna be important, maybe building small artificial islands would help, there are some good posts on this forum about building them. Good Luck !
