When you catch another one, another thing you can check is the gill rakers. GSF have short thick long ones, and RES have short stubby more widely spaced ones. So there is no way of me guessing what they might be on a GRES, but if they did happen to be short and widely spaced it would also tend to suggest RES parentage.
Edit: I corrected the GSF gill rakers description. I thought they were long and thick, but are short and thick.
Last edited by snrub; 01/20/15 08:39 AM.
