About 2 1/2 years ago we stocked the new pond when it was only about 4-5 feet deep and only about 3 months old and much less than half full with regular BG and a smaller number of RES. This year I have been catching a few to keep and can in the pressure cooker and have found out that either I have had unwanted fish arrive in the pond or that the fish I bought were not purely what I had ordered. There are definitely either GS in my pond or HBG. I am not sure I could tell the difference. Definitely the big mouth and coloration of GS though. The pond is fed by runoff and groundwater. No streams enter anywhere on my property. Did see Great Blue Heron and Green Heron and Canada Geese early on so maybe some eggs/fish could have hitchiked in. Do you think it possible that the fish truck (they work through a local feed store) is not real careful about whether their stock is segregated? Or do you think it more likely that they came in via birds or some other method? How DO you tell the difference between HBG and GS?
