Northern BG x RES from a local lake, caught three of them this afternoon.
Are you certain that Pumpkinseed are not in that pond?
Yes quite certain, this lake was stocked with both BG and RES when it was built a few years ago. Pumpkinseeds are extremely uncommon in Nebraska with small populations found primarily in the north central part of the state in the sandhills. All three of the hybrids I caught had elongated pectoral fins typical of RES. Here is a write up on the lake.