Most lake run Pacific salmon reach much smaller sizes in lakes and I would assume even smaller sizes in a pond. Most salmon require quite cold and highly oxygenated waters. It is quite rare they are holding over in your pond through the summer. What are the basic details of your pond? Size, depth, water source? Just curious... What forage fish species do you have present? I don't have much experience with Pacific salmon in lakes, but I am fairly familiar with Atlantic salmon, brown and rainbow trout. They mostly feed on midges and benthic invertebrates at smaller sizes and then begin feeding on fish after they reach 12"-14" in size. Which fish depends on the lake. In a couple of the bigger lakes I fish, they feed heavily on alewife and rainbow smelt. In smaller ones, it's mostly golden shiners and spottail shiners.
Do you have a photo of these salmon you are catching?
