The small fish you are seeing have to be last years (2004)hatch. N.pike or walleye are the only likely or common pond type fish in your area that could have spawned by 44F-46F and then the fish would not have been able to grow to 1" sizes by this date. Are you sure these 1" fish are perch and not bgill?. The 2004 year class of perch in your pond should be larger than 1", stunted perch from 2004 should be around 1.7" to 2" at this time. See if you can either net out some of these small fish or catch them in a 1/4" wire mesh fish trap to verify their identity.
